SPX3940 Datasheet, PDF (2/11 Pages) Sipex Corporation – 1A Low Dropout Voltage Regulator Fixed Output, Fast Response

ABSOLUTE MAXIMUM RATINGS
Lead Temperature (soldering, 5 seconds) ................................. 260°C
Storage Temperature Range ..................................... -65°C to +150°C
Operating Junction Temperature Range ................... -40°C to +125°C
Input Voltage (Note 5) ................................................................... 16V
ELECTRICAL CHARACTERISTICS
At V_IN=V_OUT + 1V and I_OUT = 10 mA, C_IN = 6.8 µF, C_OUT = 10µF; T_A= 25°C, unless otherwise specified.
The Boldface applies over the junction temperature range. Adjustable versions are set at 5.0V.
PARAMETER
CONDITIONS
TYP MIN MAX
SPX3940A (1%)
MIN MAX UNITS
SP3940 (2%)
1.8V Version
Output Voltage
2.5V Version
I_OUT = 10mA
10mA≤I_OUT≤1A, 6V≤V_IN≤16V
1.8 1.782 1.818 1.764 1.836
V
1.8 1.755 1.845 1.737 1.863
Output Voltage
3.3V Version
I_OUT = 10mA
10mA≤I_OUT ≤1A, 6V≤V_IN≤16V
2.5 2.475 2.525 2.450 2.550
V
2.5 2.437 2.563 2.412 2.588
Output Voltage
5.0V Version
I_OUT = 10mA
10mA≤I_OUT ≤1A, 6V≤V_IN≤16V
3.3 3.267 3.333 3.234 3.366
V
3.3 3.217 3.383 3.184 3.416
Output Voltage
All Voltage Options
I_OUT = 10mA
10mA≤I_OUT ≤1A, 6V≤V_IN≤16V
5.0 4.950 5.050 4.900 5.100
V
5.0 4.875 5.125 4.825 5.175
Line Regulation
I_O=10mA, (V_OUT+1V)≤V_IN≤16V
0.2
1.0
1.0
%
Load Regulation
V_IN=V_OUT+1V, 10mA≤I_OUT≤1A
0.3
1.5
1.5
%
∆V
Output Voltage
20
100
100 ppm/°C
∆T
Temperature Coef.
Dropout Voltage (Note 1) I_O =100mA
70
200
200
mV
(except 1.8V version)
I_O =1A
280
550
550
Ground Current (Note 3) I_O =750mA, V_IN=V_OUT, + 1V
12
25
25
mA
I_O =1A
18
I_GNDDO Ground Pin
V_IN=0.1V less than specified V_OUT
1.2
mA
Current at Dropout
I_OUT= 10mA
Current Limit
V_OUT=0V (Note 2)
2.2
1.5
1.5
A
Output Noise Voltage
C_L= 10µF
400
µV_RMS
(10Hz to 100kHz)
I_L=100mA
C_L=33µF
260
Thermal Resistance
TO-220 Junction to Case, at Tab
3
°C/W
TO-220 Junction to Ambient
60
TO-263 Junction to Case, at Tab
3
TO-263 Junction to Ambient
60
°C/W
SOT-223 Junction to Case, at Tab 15
SOT-223 Junction to Ambient
150
°C/W
NOTES:
Note 1: Dropout voltage is defined as the input to output differential when the output voltage drops to 99% of its normal value.
Note 2: V_IN=V_{OUT (NOMINAL)} + 1V. For example, use V_IN=4.3V for a 3.3V regulator. Employ pulse-testing procedures to minimize temperature rise.
Note 3: Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the load current to the ground current.
Note 4: Thermal regulation is defined as the change in the output voltage at a time T after a change in power dissipation is applied, excluding load or line regulation effects.
Note 5: Maximum positive supply voltage of 20V must be of limited duration (<100ms) and duty cycle (<1%). The maximum continuous supply voltage is 16V.
Date: 5/25/04
SPX3940 1A Low Dropout Voltage Regulator
2
© Copyright 2004 Sipex Corporation