Changes to Ordering Guide .......................................................... 12
2/11—Revision 0: Initial Version
Rev. A | Page 2 of 12
Data Sheet
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
INPUT VOLTAGE RANGE
OPERATING SUPPLY CURRENT
Symbol
V
IN
I
GND
Conditions
T
J
= –55°C to +125°C
I
OUT
= 0 µA
I
OUT
= 0 µA, V
IN
= V
OUT
+ 0.5 V or 4 V (whichever is
greater), T
J
= –55°C to +125°C
I
OUT
= 100 µA
I
OUT
= 100 µA, V
IN
= V
OUT
+ 0.5 V or 4 V (whichever is
greater), T
J
= –55°C to +125°C
I
OUT
= 1 mA
I
OUT
= 1 mA, V
IN
= V
OUT
+ 0.5 V or 4 V (whichever is
greater), T
J
= –55°C to +125°C
I
OUT
= 10 mA
I
OUT
= 10 mA, V
IN
= V
OUT
+ 0.5 V or 4 V (whichever is
greater), T
J
= –55°C to +125°C
100 µA < I
OUT
< 50 mA, V
IN
= V
OUT
+ 0.5 V or 4 V
(whichever is greater), T
J
= –55°C to +125°C
EN = GND
EN = GND, T
J
= –55°C to +125°C
I
OUT
= 100 µA
100 µA < I
OUT
< 50 mA
100 µA < I
OUT
< 50 mA, T
J
= –55°C to +125°C
I
OUT
= 100 µA
100 µA < I
OUT
< 50 mA
100 µA < I
OUT
< 50 mA, T
J
= –55°C to +125°C
V
OUT
= 1.6 V, C
OUT
= 1 µF
V
OUT
= 1.6 V, C
OUT
= 10 µF
V
OUT
= 5 V, C
OUT
= 1 µF
V
OUT
= 5 V, C
OUT
= 10 µF
V
IN
= (V
OUT
+ 0.5 V) to 28 V, T
J
= –55°C to +125°C
1 mA < I
OUT
< 50 mA
1 mA < I
OUT
< 50 mA, T
J
= –55°C to +125°C
I
OUT
= 10 mA
I
OUT
= 10 mA, T
J
= –55°C to +125°C
I
OUT
= 50 mA
I
OUT
= 50 mA, T
J
= –55°C to +125°C
Min
4
Typ
28
ADP1720-EP
Max
28
80
Unit
V
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
%
%
%
V
V
V
µV rms
µV rms
µV rms
µV rms
%/V
%/mA
%/mA
mV
mV
mV
mV
µs
mA
°C
°C
35
120
74
340
300
900
1185
0.7
1.7
–0.5
–1
–2
1.2188
1.2127
1.2005
+0.5
+1
+2
1.2311
1.2372
1.2495
2115
SHUTDOWN CURRENT
OUTPUT
Fixed Output
Voltage Accuracy
Adjustable Output
1
Voltage Accuracy
Noise (10 Hz to 100 kHz)
I
GND-SD
V
OUT
V
OUT
OUT
NOISE
1.2250
146
124
340
266
–0.02
0.001
0.005
55
105
275
480
55
200
90
150
15
140
+0.02
REGULATION
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 CHARACTERISTICS
Thermal Shutdown
Threshold
Thermal Shutdown
Hysteresis
EN CHARACTERISTICS
EN Input
Logic High
Logic Low
Leakage Current
ADJ INPUT BIAS CURRENT
(ADP1720-EP ADJUSTABLE)
4
t
START-UP
I
LIMIT
TS
SD
TS
SD-HYS
T
J
rising
V
IH
V
IL
V
I-LEAKAGE
ADJ
I-BIAS
4 V ≤ V
IN
≤ 28 V
4 V ≤ V
IN
≤ 28 V
EN = GND
EN = IN
1.8
0.1
0.5
30
0.4
1
1
100
V
V
µA
µA
nA
Rev. A | Page 3 of 12
ADP1720-EP
Parameter
POWER SUPPLY REJECTION RATIO
Symbol
PSRR
Conditions
f = 120 Hz, V
IN
= 8 V, V
OUT
= 1.6 V
f = 1 kHz, V
IN
= 8 V, V
OUT
= 1.6 V
f = 10 kHz, V
IN
= 8 V, V
OUT
= 1.6 V
f = 120 Hz, V
IN
= 8 V, V
OUT
= 5 V
f = 1 kHz, V
IN
= 8 V, V
OUT
= 5 V
f = 10 kHz, V
IN
= 8 V, V
OUT
= 5 V
Min
Typ
–90
–80
–60
–83
–70
–50
Data Sheet
Max
Unit
dB
dB
dB
dB
dB
dB
1
Accuracy when OUT is connected directly to ADJ. When OUT voltage is set by external feedback resistors, absolute accuracy in adjust mode depends on the tolerances
of resistors used.
2
Based on an end-point calculation using 1 mA and 50 mA loads. See Figure 6 for typical load regulation performance for loads less than 1 mA.
3
Dropout voltage is defined as the input-to-output voltage differential when the input voltage is set to the nominal output voltage. This applies only for output
voltages above 4 V.
4
Start-up time is defined as the time between the rising edge of EN to OUT being at 95% 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 5.0 V
output voltage is defined as the current that causes the output voltage to drop to 90% of 5.0 V, or 4.5 V.
Rev. A | Page 4 of 12
Data Sheet
ABSOLUTE MAXIMUM RATINGS
Table 2.
Parameter
IN to GND
OUT to GND
EN to GND
ADJ to GND
Storage Temperature Range
Operating Junction
Temperature Range
Soldering Conditions
Rating
–0.3 V to +30 V
–0.3 V to IN or +6 V
(whichever is less)
–0.3 V to +30 V
–0.3 V to +6 V
–65°C to +150°C
–55°C to +125°C
JEDEC J-STD-020
ADP1720-EP
THERMAL RESISTANCE
θ
JA
is specified for the worst-case conditions, that is, a device
soldered in a circuit board for surface-mount packages.
Table 3. Thermal Resistance
Package Type
8-Lead MSOP
θ
JA
246
θ
JC
66
Unit
°C/W
ESD CAUTION
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
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