General Description
The MAX15006/MAX15007 ultra-low quiescent-current linear regulators are ideal for use in automotive and battery-operated systems. These devices operate from an input voltage of 4V to 40V, deliver up to 50mA of out-put current, and consume only 10μA of quiescent cur-rent at no load. The internal p-channel pass device keeps the quiescent current low even at full load. The MAX15007 consumes only 3μA current when in shut-down.
The MAX15006A/MAX15007A have a fixed 3.3V output while the MAX15006B/MAX15007B have a fixed 5V out-put voltage. The MAX15007 includes an enable input to turn the device on or off. All devices are short-circuit protected and include thermal shutdown.
The MAX15006/MAX15007 operate over the -40°C to +125°C automotive temperature range. These devices are available in space-saving 3mm x 3mm 6-pin TDFN and 8-pin SO thermally enhanced packages.
Applications
Automotive
Tire-Pressure Monitoring Industrial Telecom Networking
Features
o Wide Operating Input Voltage Range (4V to 40V)o Guaranteed 50mA Output Current o Low Quiescent Current
10μA (No Load) and 90μA (Full Load)o Operates Through Cold-Crank Condition o Withstands 45V Load Dump o Low Dropout Voltage of 300mV (MAX15006B/MAX15007B)
o Stable Operation with Tiny 2.2μF Output Capacitor
o Enable Input (MAX15007)
o Preset 3.3V and 5.0V Output Voltages o Thermal and Short-Circuit Protection
o -40°C to +125°C Operating Temperature Range o Thermally Enhanced 3mm x 3mm 6-Pin TDFN/8-Pin SO Packages
MAX15006/MAX15007
40V , Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO
________________________________________________________________Maxim Integrated Products
1
Pin Configurations
19-0663; Rev 0; 10/06
For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at https://www.wendangku.net/doc/b27126279.html,.
Ordering Information
Ordering Information continued at end of data sheet.
Note: All devices are specified over the -40°C to +125°C oper-ating temperature range.
+Denotes lead-free package.*EP = Exposed pad.
M A X 15006/M A X 15007
40V , Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO 2_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
= 14V, I = 1mA, C = 0.1μF, C = 2.2μF, T = T = -40°C to +125°C, unless otherwise noted. Typical specifications are Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
IN to GND...............................................................-0.3V to +45V EN to GND..............................................................-0.3V to +45V OUT to GND...........................................................-0.3V to +12V OUT Short-Circuit Duration........................................Continuous Maximum Current Into Any Pin (except IN and OUT)......±50mA Continuous Power Dissipation (T A = +70°C)
6-Pin TDFN-EP (derate 23.8mW/°C above +70°C).......1904mW*8-Pin SO-EP (derate 23.3mW/°C above +70°C).........1860mW*
Thermal Resistance
θJA , 6-Pin TDFN ...........................................................42°C/W θJC , 6-Pin TDFN..........................................................8.5°C/W θJA , 8-Pin SO-EP..........................................................43°C/W θJC , 8-Pin SO-EP............................................................7°C/W Operating Temperature Range .........................-40°C to +125°C Junction Temperature......................................................+150°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s).................................+300°C
*As per JEDEC51 Standard (Multilayer Board).
MAX15006/MAX15007
40V , Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO
_______________________________________________________________________________________3
OUT Note 3:Dropout voltage is defined as (V IN - V OUT ) when V OUT is 2% below the value of V OUT when V IN = V OUT + 3V.
Note 4:
For V OUT = 3.3V, the 700mV dropout indicates V OUT does not reach 2% below V OUT at V IN = V OUT + 3V at minimum 4V input voltage.
Note 5:Enable to regulation time is the time the output takes to reach 95% of its final value with V IN = 14V and EN is taken from V IL
to V IH in 5ns.
ELECTRICAL CHARACTERISTICS (continued)
(V IN = 14V, I OUT = 1mA, C IN = 0.1μF, C OUT = 2.2μF, T A = T J = -40°C to +125°C, unless otherwise noted. Typical specifications are at T A = +25°C.) (Note 1)
M A X 15006/M A X 15007
40V , Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO 4_______________________________________________________________________________________
Typical Operating Characteristics
(V IN = 14V, C IN = 0.1μF, C OUT = 2.2μF, V EN = V IN , T A = +25°C, unless otherwise noted.)
OUTPUT VOLTAGE vs. INPUT VOLTAGE
(MAX15006A/MAX15007A)
V IN (V)
V O U T (V )
35
302025
10
15
5
0.30.60.91.21.51.82.12.42.73.33.03.60
40
OUTPUT VOLTAGE vs. INPUT VOLTAGE
(MAX15006B/MAX15007B)
V IN (V)
V O U T (V )
35
30
2025
10
15
5
0.51.01.52.02.53.03.54.04.55.05.50
40
OUTPUT VOLTAGE vs. TEMPERATURE
(MAX15006A/MAX15007A)
TEMPERATURE (°C)
V O U T (V )
12510050
75
25
-25
3.183.21
3.243.273.303.333.363.393.423.45
3.15
-50
150
OUTPUT VOLTAGE vs. TEMPERATURE
(MAX15006B/MAX15007B)
TEMPERATURE (°C)
V O U T (V )
12510050
750
25
-25
4.804.854.904.95
5.005.055.105.155.205.254.75
-50
150DROPOUT VOLTAGE vs. LOAD CURRENT
(MAX15006B/MAX15007B)
I OUT (mA)
V D R O P O U T (m V )
35304540202510155501001502002503003504004505000
050
GROUND CURRENT vs. LOAD CURRENT
(MAX15006B/MAX15007B)
I OUT (mA)
I G N D (μA )
35304540202510155
10
2030405060708090100
00
50
GROUND CURRENT vs. TEMPERATURE
(I OUT = 0)
TEMPERATURE (°C)I G N D (μA )
12510050
75
25
-25
246810121416180-50
150GROUND CURRENT vs. TEMPERATURE
(I OUT = 50mA)
M A X 15006 t o c 08
TEMPERATURE (°C)
I G N D (μA )
1251005075025-2591929394959697989910090
-50150
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
TEMPERATURE (°C)
I S H D N (μA )
12510050
75
25
-25
1
2345678910
0-50
150
MAX15006/MAX15007
40V , Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO
_______________________________________________________________________________________5
GROUND CURRENT DISTRIBUTION
(T A = -40°C)
I GND (μA)
N U M B E R O F U N I T S
10.9
10.810.710.6
10.5
3691215182124270
10.4
11.0
GROUND CURRENT DISTRIBUTION
(T A = +25°C)
I GND (μA)
N U M B E R O F U N I T S
11.3
11.211.111.0
10.9
3691215182124270
10.8
11.4
GROUND CURRENT DISTRIBUTION
(T A = +125°C)
I GND (μA)
N
U M B E R O F U N I T S
12.011.911.811.7369121518212427
11.612.1
LOAD-TRANSIENT RESPONSE (MAX15006B/MAX15007B)
MAX15006 toc13
400
μs/div V OUT
AC-COUPLED 200mV/div
50mA I OUT
1mA
INPUT-VOLTAGE STEP RESPONSE (MAX15006B/MAX15007B, I OUT = 1mA)
MAX15006 toc14
400μs/div
18V V IN 14V
V OUT
AC-COUPLED 100mV/div
STARTUP RESPONSE
200μs/div
V IN 5V/div
V OUT 2V/div
MAX15006B/MAX15007B I OUT = 1mA
ENABLE STARTUP RESPONSE
400μs/div
EN 1V/div V OUT 2V/div
MAX15006B/MAX15007B I OUT = 0ENABLE STARTUP RESPONSE
400μs/div
EN 1V/div V OUT 2V/div
MAX15006B/MAX15007B I OUT = 50mA ENABLE STARTUP RESPONSE
400μs/div
EN 1V/div
V OUT 2V/div
Typical Operating Characteristics (continued)
(V IN = 14V, C IN = 0.1μF, C OUT = 2.2μF, V EN = V IN , T A = +25°C, unless otherwise noted.)
M A X 15006/M A X 15007
40V , Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO 6_______________________________________________________________________________________
ENABLE STARTUP RESPONSE
400μs/div
EN 1V/div
V OUT 2V/div
MAX15006B/MAX15007B V IN = 40V, I OUT = 50mA POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
FREQUENCY (kHz)
P S R R (d B )
1001
10
0.1
-90-80-70-60-50-40-30-20-10
0-100
0.01
1000
OUTPUT-NOISE SPECTRAL DENSITY
vs. FREQUENCY
FREQUENCY (kHz)
O U T P U T -N O I S E S P E C T R A L D E N S I T Y (μV /H z )
1
10
0.1
0.1
1
10
0.01
0.01
100
OUTPUT-NOISE SPECTRAL DENSITY
vs. FREQUENCY
FREQUENCY (kHz)
1
10
0.1
0.1
1
100.01
0.01
100
O U T P U T -N O I S E S P E C T R A L D E N S I T Y (μV /√H z )
OUTPUT VOLTAGE NOISE vs. LOAD CURRENT
I OUT (mA)
e n (μV R M S )
403525301510205
1530
45607590105120135150
00
50
45Typical Operating Characteristics (continued)
(V IN = 14V, C IN = 0.1μF, C OUT = 2.2μF, V EN = V IN , T A = +25°C, unless otherwise noted.)
MAX15006/MAX15007
40V , Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO
_______________________________________________________________________________________7
OUTPUT VOLTAGE NOISE vs. OUTPUT CAPACITANCE
C OUT (μF)
e n (μV R M S )
14128104
6
2
153045607590105120135150
00
22181620CLAMPED LOAD DUMP
(I OUT = 0)
MAX15006 toc25
100ms/div
40V V IN 13.5V
V OUT
AC-COUPLED 20mV/div
Typical Operating Characteristics (continued)
(V IN = 14V, C IN = 0.1μF, C OUT = 2.2μF, V EN = V IN , T A = +25°C, unless otherwise noted.)
M A X 15006/M A X 15007
40V , Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO 8_______________________________________________________________________________________
Functional Diagrams
Figure 2.MAX15007 Simplified Functional Diagram
MAX15006/MAX15007
40V , Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO
The MAX15006/MAX15007 high-voltage linear regula-tors operate over a 4V to 40V input voltage range.These devices guarantee 50mA load drive, and offer preset output voltages of +3.3V or +5V. Thermal shut-down and short-circuit protection prevent damage dur-ing overtemperature and overcurrent conditions. The MAX15007 includes an enable input (EN) allowing the regulators to be turned on/off using a logic-level volt-age. Driving EN high turns on the device while driving EN low places the device in a low-power shutdown mode. In shutdown, the supply current is reduced to 3μA (typ). The MAX15006/MAX15007 operate over the -40°C to +125°C automotive temperature range. All devices are available in thermally enhanced 6-pin TDFN and 8-pin SO packages capable of dissipating 1.904W and 1.860W at T A = +70°C, respectively.
Regulator
The regulator accepts an input voltage from 4V to 40V.The MAX15006A/MAX15007A have a fixed 3.3V output voltage while the MAX15006B/MAX15007B offer a fixed 5V output voltage.
EN Input (MAX15007 Only)
EN is an active-high, logic-level enable input that turns the device on or off. Drive EN high to turn the device on. An internal 0.5μA pulldown current keeps the MAX15007 in shutdown mode when driven by a three-
state driver in high-impedance mode, or an open-drain driver. While in shutdown, the device consumes only 3μA (typ). EN withstands voltages up to 40V, allowing it to be driven by high input level voltages or connected to IN for always-on operation.
Thermal Protection
When the junction temperature exceeds +165°C, an internal thermal sensor turns the pass transistor off, and allows the device to cool. The thermal sensor turns the pass transistor on again after the junction temperature cools by 20°C. This results in a cycled output during continuous thermal-overload conditions. Thermal pro-tection protects the MAX15006/MAX15007 in the event of fault conditions. Operation at T J = +150°C without going into thermal shutdown is not guaranteed. Use Figures 3a and 3b to determine the minimum guaran-teed output current.
Output Short-Circuit Current Limit
The MAX15006/MAX15007 feature a 175mA current limit. The output can be shorted to GND for an indefi-nite period of time without damage to the device.During a short circuit, the power dissipated across the pass transistor can quickly heat the device. When the die temperature reaches +165°C, the MAX15006/MAX15007 shut down and automatically restart after the die temperature cools by 20°C.
_______________________________________________________________________________________
9
M A X 15006/M A X 15007
40V , Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO 10______________________________________________________________________________________
Applications Information
Available Output Current Calculation
The MAX15006/MAX15007 provide up to 50mA of con-tinuous output current. The input voltage range extends to 40V. Package power dissipation limits the amount of output current available for a given input/output voltage and ambient temperature. Figure 4 shows the maximum allowable power dissipation for these devices to keep the junction temperature below +150°C. Figure 4 assumes that the exposed metal pad of the MAX15006/MAX15007is soldered to 1in 2of PCB copper.
Use Figure 4 to determine the allowable package dissi-pation for a given ambient temperature. Alternately, use the following formulas to calculate the allowable pack-age dissipation. For the TDFN package:
For the SO-EP package:
After determining the allowable package dissipation,
calculate the maximum allowable output current, with-out exceeding the +150°C junction temperature, using the following formula:
The above equations do not include the negligible power dissipation from self-heating due to the IC ground current.
Example 1 (TDFN Package):
T A = +125°C V IN = 26V
V OUT = 3.3V
Calculate the maximum allowable package dissipation at the given temperature as follows:
And establish the maximum output current:
Example 2 (TDFN Package):
T A = +85°C V IN = 14V V OUT = 5V
Calculate the maximum allowable package dissipation
at the given temperature as follows:
Figure 4.Calculated Maximum Power Dissipation vs. Ambient Temperature
MAX15006/MAX15007
40V , Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO
______________________________________________________________________________________
11
Then determine the maximum output current:
Example 3 (TDFN Package):T A = +50°C V IN = 9V V OUT = 5V
Calculate the maximum allowable package dissipation at the given temperature as follows:
P D = 1.9048W
Find the maximum output current:
In Examples 2 and 3, the maximum output current is calculated as 172mA and 476mA, respectively; howev-er, the allowable output current cannot exceed 50mA.
Alternately, use Figures 5a and 5b to quickly determine the maximum allowable output current for selected ambient temperatures and input voltages.
Output-Capacitor Selection
and Regulator Stability
For stable operation over the full temperature range and with load currents up to 50mA, use a low-ESR 2.2μF (min) ceramic or tantalum output capacitor. Use larger output-capacitor values such as 22μF to reduce noise, improve load-transient response, and power-supply rejection.
Some ceramic dielectrics exhibit large capacitance and ESR variations with temperature. Ensure the mini-mum capacitance under worst-case conditions does not drop below 1.3μF to ensure output stability. With an X7R dielectric, 2.2μF should be sufficient at all operat-
ing temperatures.
Figure 5a.Calculated Maximum Output Current vs. Input
Voltage (6-Pin TDFN-EP)Figure 5b.Calculated Maximum Output Current vs. Input Voltage (8-Pin SO-EP)
M A X 15006/M A X 15007
40V , Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO 12______________________________________________________________________________________
Pin Configurations (continued)
Ordering Information (continued)
Note: All devices are specified over the -40°C to +125°C oper-ating temperature range.
+Denotes lead-free package.*EP = Exposed pad.
Chip Information
PROCESS: BiCMOS
MAX15006/MAX15007
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to https://www.wendangku.net/doc/b27126279.html,/packages .)
40V , Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO
______________________________________________________________________________________
13
M A X 15006/M A X 15007
40V , Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO 14______________________________________________________________________________________
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to https://www.wendangku.net/doc/b27126279.html,/packages .)
MAX15006/MAX15007
40V , Ultra-Low Quiescent-Current
Linear Regulators in 6-Pin TDFN/8-Pin SO
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________15?2006 Maxim Integrated Products
is a registered trademark of Maxim Integrated Products, Inc.
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to https://www.wendangku.net/doc/b27126279.html,/packages .)