Changes to Ordering Guide ...........................................................17
5/10—Rev. A to Rev. B
Changes to Figure 1 .......................................................................... 1
4/10—Rev. 0 to Rev. A
Changes to Ordering Guide .......................................................... 17
2/10—Revision 0: Initial Version
Rev. E | Page 2 of 20
Data Sheet
SPECIFICATIONS
ADP172
V
IN
= (V
OUT
+ 0.4 V) or 1.6 V (whichever is greater), EN = V
IN
, I
OUT
= 10 mA, C
IN
= C
OUT
= 1 µF, T
A
= 25°C, unless otherwise noted.
Table 1.
Parameter
INPUT VOLTAGE RANGE
OPERATING SUPPLY CURRENT
1
Symbol
V
IN
I
GND
Conditions
T
J
= −40°C to +125°C
I
OUT
= 0 µA
I
OUT
= 0 µA, T
J
= −40°C to +125°C
I
OUT
= 1 mA
I
OUT
= 1 mA, T
J
= −40°C to +125°C
I
OUT
= 150 mA
I
OUT
= 150 mA, T
J
= −40°C to +125°C
I
OUT
= 300 mA
I
OUT
= 300 mA, T
J
= −40°C to +125°C
EN = GND
EN = GND, V
IN
= 3.6 V, T
J
= −40°C to +85°C
EN = GND, V
IN
= 3.6 V, T
J
= 85°C to 125°C
I
OUT
= 10 mA
1 mA < I
OUT
< 300 mA, V
IN
= (V
OUT
+ 0.5 V) to 3.6 V
1 mA < I
OUT
< 300 mA, V
IN
= (V
OUT
+ 0.5 V) to 3.6 V,
T
J
= −40°C to +125°C
V
IN
= (V
OUT
+ 0.5 V) to 3.6 V, T
J
= −40°C to +125°C
I
OUT
= 1 mA to 300 mA
I
OUT
= 1 mA to 300 mA, T
J
= −40°C to +125°C
I
OUT
= 10 mA, V
OUT
≥ 1.8 V
I
OUT
= 10 mA, V
OUT
≥ 1.8 V, T
J
= −40°C to +125°C
I
OUT
= 150 mA, V
OUT
≥ 1.8 V
I
OUT
= 150 mA, V
OUT
≥ 1.8 V, T
J
= −40°C to +125°C
I
OUT
= 300 mA, V
OUT
≥ 1.8 V
I
OUT
= 300 mA, V
OUT
≥ 1.8 V, T
J
= −40°C to +125°C
V
OUT
= 1.8 V
Min
1.6
Typ
23
60
50
100
130
210
170
260
0.1
2
25
+1
+1.5
+1.5
+0.25
0.001
0.005
2
7
25
50
50
100
400
T
J
rising
120
450
150
15
1.2
0.4
0.1
1
1.5
0.7
80
72
50
40
30
800
Max
3.6
Unit
V
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
%
%
%
%/V
%/mA
%/mA
mV
mV
mV
mV
mV
mV
µs
mA
°C
°C
V
V
µA
µA
V
V
mV
µV rms
µV rms
µV rms
µV rms
SHUTDOWN CURRENT
I
GND-SD
OUTPUT VOLTAGE ACCURACY
V
OUT
−1
−2
−3
−0.25
LINE REGULATION
LOAD REGULATION
2
DROPOUT VOLTAGE
3
∆V
OUT
/∆V
IN
∆V
OUT
/∆I
OUT
V
DROPOUT
START-UP TIME
CURRENT-LIMIT THRESHOLD
5
THERMAL SHUTDOWN
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
4
t
START-UP
I
LIMIT
TS
SD
TS
SD-HYS
V
IH
V
IL
V
I-LEAKAGE
UVLO
UVLO
RISE
UVLO
FALL
UVLO
HYS
OUT
NOISE
EN INPUT
Logic High Voltage
Logic Low Voltage
Leakage Current Voltage
UNDERVOLTAGE LOCKOUT
Input Voltage Rising
Input Voltage Falling
Hysteresis
OUTPUT NOISE
1.6 V ≤ V
IN
≤ 3.6 V
1.6 V ≤ V
IN
≤ 3.6 V
EN = VIN or GND
EN = VIN or GND, T
J
= −40°C to +125°C
T
J
= −40°C to +125°C
T
J
= −40°C to +125°C
10 Hz to 100 kHz, V
IN
= 3.6 V, V
OUT
= 3.0 V
10 Hz to 100 kHz, V
IN
= 3.6 V, V
OUT
= 1.8 V
10 Hz to 100 kHz, V
IN
= 3.6 V, V
OUT
= 1.2 V
10 Hz to 100 kHz, V
IN
= 3.6 V, V
OUT
= 0.8 V
Rev. E | Page 3 of 20
ADP172
Parameter
POWER SUPPLY REJECTION RATIO
Symbol
PSRR
Conditions
1 kHz, V
IN
= 3.6 V, I
OUT
= 10 mA, V
OUT
= 0.8 V
10 kHz, V
IN
= 3.6 V, I
OUT
= 10 mA, V
OUT
= 0.8 V
10 kHz, V
IN
= (V
OUT
+ 1 V), I
OUT
= 10 mA to 300 mA
100 kHz, V
IN
= (V
OUT
+ 1 V), I
OUT
= 10 mA to 300 mA
Min
Typ
73
70
50
47
Data Sheet
Max
Unit
dB
dB
dB
dB
The current from the external resistor divider network in the case of adjustable voltage output (as with the
ADP172)
should be subtracted from the ground current measured.
Based on an end-point calculation using 1 mA and 300 mA loads. See Figure 4 for typical load regulation performance for loads less than 1 mA.
3
Applies only for output voltages above 1.6 V. Dropout voltage is defined as the input-to-output voltage differential when the input voltage is set to the nominal
output voltage.
4
Start-up time is defined as the time between the rising edge of EN and VOUT at 90% of its nominal value.
5
Current-limit threshold is defined as the current at which the output voltage drops to 90% of the specified typical value. For example, the current limit for a 3.0 V
output voltage is defined as the current that causes the output voltage to drop to 90% of 3.0 V, or 2.7 V.
1
2
INPUT AND OUTPUT CAPACITOR, RECOMMENDED SPECIFICATIONS
Table 2.
Parameter
MINIMUM INPUT AND OUTPUT
CAPACITANCE
1
CAPACITOR ESR
1
Symbol
C
MIN
R
ESR
Conditions
T
J
= −40°C to +125°C
T
J
= −40°C to +125°C
Min
0.45
0.001
Typ
Max
Unit
µF
Ω
1
The minimum input and output capacitance should be greater than 0.45 µF over the full range of operating conditions. The full range of operating conditions in the
application must be considered during device selection to ensure that the minimum capacitance specification is met. X7R and X5R type capacitors are recommended;
Y5V and Z5U capacitors are not recommended for use with any LDO.
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