AM100-73中文资料
AM100-73
Preliminary
DC/DC Converter
Features
■Converts a Positive Voltage Into a Negative Voltage ■Ideal for Providing Gate Voltage Bias for GaAs Products ■Ultra Small SOT -6 Package ■Only Three Capacitors Required as Additional Components ■High Oscillating Frequency (600 kHz)Enables the Use of Low Cost Ceramic Components ■Available with Some of Alpha’s Power Products in a Single Package*
Description
The AM100-73 is a low cost, switched capacitor voltage converter.Its no-load, inverted output voltage follows the input voltage over a 2-7 V range.The high operating frequency of the AM100-73 permits the use low cost ceramic capacitors and facilitates filtering.Applications include portable and mobile voltage conversion, GaAs amplifier biasing, automatic power control and LCD negative supply.
Parameter
Value Unit Supply Voltage
10V Output Short Circuit Duration 10Sec.Operating T emperature -40 to +100°C Storage Temperature
-65 to +150
°C
Absolute Maximum Ratings
Operating Characteristics at 25°C
Parameter 1
Symbol Condition
Min.Typ.
Max.Unit Supply Voltage V GEN 27
V Supply Current I GEN V GEN = 3.5 V I LOAD = 3.5 mA -3.15
μA Output Voltage V SS V GEN = 3.5 V I LOAD = 3.5 mA -3.15V Oscillation Frequency F OSC 600kHz Output Impedance R o
70?Current Efficiency
80%Voltage Conversion Efficiency
V GEN = 3.5 V I LOAD = 0.0 mA
95%
SOT-6
0.106 (2.70 mm)0.004 (0.10 mm)
0.0140.0041.All measurements made in a 50 ?system, unless otherwise specified.
Output Voltage vs.Load Current
V =
5V
GEN
0.010.02
0.030.040.050.060.07
Load Current (A)
V (V)
GEN I (A )
G E N Supply Current vs.Supply Voltage
I = 0
mA
SS 0
0.0005
0.0010.00150.0020.0025
0.0030
1
2
3
4
5
6
7
8
V (V )
S S OutputVoltage vs.Load Current
V = 2V to 7V
GEN -7-6-5-4-3-2
00
0.005
0.015
0.025
0.035
Load Current (mA)
V (V )
S S Output Voltage vs.Supply Voltage
I = 0
mA
SS –2
–1.75–1.5–1.25–1–0.75–0.5
–0.2500.25
00.20.40.60.8 1.01.2 1.4 1.6 1.8 2.0
V (V)
GEN Output Voltage vs.Load Current
V =2V GEN –2
–1.6–1.2–0.8–0.4
000.0050.010.0150.020.0250.030.035
Load Current (A)V (V )
S S O U T Output Voltage vs.Supply Voltage
I = 0 mA and 7 mA
SS –7
–6
–5–4–3–2–1
010*******
V (V )
S S V (V)
GEN
Pin Out
Pin Configuration
V GEN GND GND
V OUT C B C A
Terminal
Symbol Description 1V GEN Positive Input Voltage
2GND Ground 3GND Ground
4C A Charge Pump Capacitor P IN A 5C B Charge Pump Capacitor P IN B 6
V OUT
Negative Output Voltage