Data Sheet
ADM7170
SPECIFICATIONS
VIN = (VOUT + 0.5 V) or 2.3 V (whichever is greater), EN = VIN, ILOAD = 10 mA, CIN = COUT = 4.7 µF, TA = 25°C for typical specifications,
TJ = −40°C to +125°C for minimum/maximum specifications, unless otherwise noted.
Table 2.
Parameter
Symbol
VIN
Test Conditions/Comments
Min
Typ
Max
6.5
Unit
V
INPUT VOLTAGE RANGE
LOAD CURRENT
2.3
ILOAD
500
2.0
5.1
mA
mA
mA
µA
OPERATING SUPPLY CURRENT
IGND
ILOAD = 0 µA
ILOAD = 500 mA
EN = GND, VIN = 5 V
0.7
3.0
SHUTDOWN CURRENT
IGND-SD
VOUT
0.25
3.8
OUTPUT VOLTAGE ACCURACY
Fixed Output Voltage Accuracy
ILOAD = 10 mA, TJ = 25°C
100 μA< ILOAD < 500 mA, VIN = (VOUT + 0.5 V) to 6.5 V
ILOAD = 10 mA
−0.75
−1.25
1.191 1.200 1.209
+0.75
+1.25
%
%
V
Adjustable Output Voltage
Accuracy
VSENSE
10 mA < ILOAD < 2 A, VIN = (VOUT + 0.5 V) to 6.5 V
VIN = (VOUT + 0.5 V) to 6.5 V
1.185
−0.1
1.215
V
REGULATION
Line
Load
∆VOUT/∆VIN
+0.1
0.6
%/V
%/A
nA
∆VOUT/∆ILOAD ILOAD = 100 μA to 500 mA
0.1
1
SENSE INPUT BIAS CURRENT
DROPOUT VOLTAGE1
OUTPUT NOISE
SENSEI-BIAS
VDROPOUT
100 μA< ILOAD < 500 mA, VIN = (VOUT + 0.5 V) to 6.5 V
ILOAD = 500 mA, VOUT = 3 V
42
6
5
70
mV
OUTNOISE
10 Hz to 100 kHz, all fixed output voltages
100 Hz to 100 kHz, all fixed output voltages
100 Hz, all fixed output voltages
1 kHz, all fixed output voltages
10 kHz, all fixed output voltages
µV rms
µV rms
nV/√Hz
nV/√Hz
nV/√Hz
nV/√Hz
dB
dB
dB
dB
dB
Noise Spectral Density
110
40
20
12
60
53
42
31
30
20
1.5
100 kHz, all fixed output voltages
POWER SUPPLY REJECTION RATIO PSRR
100 kHz, VIN = 4.0 V, VOUT = 3 V, ILOAD = 500 mA, CSS = 0 nF
100 kHz, VIN = 3.5 V, VOUT = 3 V, ILOAD = 500 mA, CSS = 0 nF
100 kHz, VIN = 3.3 V, VOUT = 3 V, ILOAD = 500 mA, CSS = 0 nF
1 MHz, VIN = 4.0 V, VOUT = 3 V, ILOAD = 500 mA, CSS = 0 nF
1 MHz, VIN = 3.5 V, VOUT = 3 V, ILOAD = 500 mA, CSS = 0 nF
1 MHz, VIN = 3.3 V, VOUT = 3 V, ILOAD = 500 mA, CSS = 0 nF
dB
TRANSIENT LOAD RESPONSE
tTR-REC
Time for output voltage to settle within VSETTLE from
VDEV for a 1 mA to 500 mA load step, load step rise
time = 400 ns
μs
VDEV
Output voltage deviation due to 1 mA to 500 mA load
step
Output voltage deviation after transient load response
time (tTR-REC) has passed, VOUT = 5 V, COUT = 4.7 µF
35
mV
%
VSETTLE
tSTART-UP
0.1
START-UP TIME2
VOUT = 5 V, CSS = 0 nF
VOUT = 5 V, CSS = 1 nF
VIN = 5 V
380
1.0
1
µs
ms
µA
A
SOFT START CURRENT
ISS
0.5
0.7
1.5
1.8
CURRENT-LIMIT THRESHOLD3
VOUT PULL-DOWN RESISTANCE
THERMAL SHUTDOWN
ILIMIT
1.3
11
VOUT-PULL
EN = 0 V, VOUT = 1 V
TJ rising
kΩ
Thermal Shutdown Threshold TSSD
Thermal Shutdown Hysteresis TSSD-HYS
UNDERVOLTAGE THRESHOLDS
150
15
°C
°C
Input Voltage Rising
Input Voltage Falling
Hysteresis
UVLORISE
UVLOFALL
UVLOHYS
2.28
V
V
mV
1.94
200
Rev. C | Page 3 of 23