Datasheet

ADP1720
Rev. A | Page 3 of 16
SPECIFICATIONS
V
IN
= 12 V, I
OUT
= 100 μA, C
IN
= C
OUT
= 1 μF, T
A
= 25°C, unless otherwise noted.
Table 1.
Parameter Symbol Conditions Min Typ Max Unit
INPUT VOLTAGE RANGE V
IN
T
J
= –40°C to +125°C 4 28 V
OPERATING SUPPLY CURRENT I
GND
I
OUT
= 0 μA 28 μA
I
OUT
= 0 μA,
V
IN
=
V
OUT
+ 0.5
V
or 4
V
(whichever is
greater), T
J
= –40°C to +125°C
80 μA
I
OUT
= 100 μA 35 μA
I
OUT
= 100 μA, V
IN
= V
OUT
+ 0.5 V or 4 V (whichever is
greater), T
J
= –40°C to +125°C
120 μA
I
OUT
= 1 mA 74 μA
I
OUT
= 1 mA, V
IN
= V
OUT
+ 0.5 V or 4 V (whichever is
greater), T
J
= –40°C to +125°C
340 μA
I
OUT
= 10 mA 300 μA
I
OUT
= 10 mA, V
IN
= V
OUT
+ 0.5 V or 4 V (whichever is
greater), T
J
= –40°C to +125°C
900 μA
100 μA < I
OUT
< 50 mA, V
IN
= V
OUT
+ 0.5 V or 4 V
(whichever is greater), T
J
= –40°C to +125°C
1185 2115 μA
SHUTDOWN CURRENT I
GND-SD
EN = GND 0.7 μA
EN = GND, T
J
= –40°C to +125°C 1.5 μA
OUTPUT
Fixed Output V
OUT
I
OUT
= 100 μA –0.5 +0.5 %
Voltage Accuracy 100 μA < I
OUT
< 50 mA –1 +1 %
100 μA < I
OUT
< 50 mA, T
J
= –40°C to +125°C –2 +2 %
Adjustable Output
1
V
OUT
I
OUT
= 100 μA 1.2188 1.2250 1.2311 V
Voltage Accuracy 100 μA < I
OUT
< 50 mA 1.2127 1.2372 V
100 μA < I
OUT
< 50 mA, T
J
= –40°C to +125°C 1.2005 1.2495 V
Noise (10 Hz to 100 kHz)
OUT
NOISE
V
OUT
= 1.6 V, C
OUT
= 1 μF 146 μV rms
V
OUT
= 1.6 V, C
OUT
= 10 μF 124 μV rms
V
OUT
= 5 V, C
OUT
= 1 μF
340 μV rms
V
OUT
= 5 V, C
OUT
= 10 μF
266 μV rms
REGULATION
Line Regulation ∆V
OUT
/∆V
IN
V
IN
= (V
OUT
+ 0.5 V) to 28 V, T
J
= –40°C to +125°C –0.02 +0.02 %/ V
Load Regulation
2
∆V
OUT
/∆I
OUT
1 mA < I
OUT
< 50 mA 0.001 %/mA
1 mA < I
OUT
< 50 mA, T
J
= –40°C to +125°C 0.005 %/mA
DROPOUT VOLTAGE
3
V
DROPOUT
I
OUT
= 10 mA 55 mV
I
OUT
= 10 mA, T
J
= –40°C to +125°C 105 mV
I
OUT
= 50 mA 275 mV
I
OUT
= 50 mA, T
J
= –40°C to +125°C 480 mV
START-UP TIME
4
T
START-UP
200 μs
CURRENT LIMIT THRESHOLD
5
I
LIMIT
55 90 140 mA
THERMAL CHARACTERISTICS
Thermal Shutdown
Threshold
TS
SD
T
J
rising 150
°C
Thermal Shutdown
Hysteresis
TS
SD-HYS
15
°C
EN CHARACTERISTICS
EN Input
Logic High V
IH
4 V ≤ V
IN
≤ 28 V 1.8 V
Logic Low V
IL
4 V ≤ V
IN
≤ 28 V 0.4 V
Leakage Current V
I-LEAKAGE
EN = GND 0.1 1 μA
EN = IN 0.5 1 μA
ADJ INPUT BIAS CURRENT
(ADP1720 ADJUSTABLE)
ADJ
I-BIAS
30 100 nA