Datasheet

–2–
REV. 0
ADP1111–SPECIFICATIONS
Parameter Conditions V
S
Min Typ Max Units
QUIESCENT CURRENT Switch Off I
Q
300 500 μA
INPUT VOLTAGE Step-Up Mode V
IN
2.0 12.6 V
Step-Down Mode 30.0 V
COMPARATOR TRIP POINT
VOLTAGE ADP1111
1
1.20 1.25 1.30 V
OUTPUT SENSE VOLTAGE ADP1111-3.3 V
OUT
3.13 3.30 3.47 V
ADP1111-5
2
4.75 5.00 5.25 V
ADP1111-12
2
11.40 12.00 12.60 V
COMPARATOR HYSTERESIS ADP1111 8 12.5 mV
OUTPUT HYSTERESIS ADP1111-3.3 21 50 mV
ADP1111-5 32 50 mV
ADP1111-12 75 120 mV
OSCILLATOR FREQUENCY f
OSC
54 72 88 kHz
DUTY CYCLE Full Load DC 43 50 65 %
SWITCH ON TIME I
LIM
Tied to V
IN
t
ON
57 9 μs
SW SATURATION VOLTAGE T
A
= +25°C
STEP-UP MODE V
IN
= 3.0 V, I
SW
= 650 mA V
SAT
0.5 0.65 V
V
IN
= 5.0 V, I
SW
= 1 A 0.8 1.0 V
STEP-DOWN MODE V
IN
= 12 V, I
SW
= 650 mA 1.1 1.5 V
FEEDBACK PIN BIAS CURRENT ADP1111 V
FB
= 0 V I
FB
160 300 nA
SET PIN BIAS CURRENT V
SET
= V
REF
I
SET
270 400 nA
GAIN BLOCK OUTPUT LOW I
SINK
= 300 μA
V
SET
= 1.00 V V
OL
0.15 0.4 V
REFERENCE LINE REGULATION 5 V ≤ V
IN
≤ 30 V 0.02 0.075 %/V
2 V ≤ V
IN
≤ 5 V 0.4 %/V
GAIN BLOCK GAIN R
L
= 100 kΩ
3
A
V
1000 6000 V/V
CURRENT LIMIT T
A
= +25°C
220 Ω from I
LIM
to V
IN
I
LIM
400 mA
CURRENT LIMIT TEMPERATURE
COEFFICIENT –0.3 %/°C
SWITCH OFF LEAKAGE CURRENT T
A
= +25°C
Measured at SW1 Pin
V
SW1
= 12 V 1 10 μA
MAXIMUM EXCURSION BELOW GND T
A
= +25°C
I
SW1
≤ 10 μA, Switch Off –400 –350 mV
NOTES
1
This specification guarantees that both the high and low trip points of the comparator fall within the 1.20 V to 1.30 V range.
2
The output voltage waveform will exhibit a sawtooth shape due to the comparator hysteresis. The output voltage on the fixed output versions will always be within
the specified range.
3
100 kΩ resistor connected between a 5 V source and the AO pin.
4
All limits at temperature extremes are guaranteed via correlation using standard statistical methods.
Specifications subject to change without notice.
(0ⴗC ≤ T
A
≤ +70ⴗC, V
IN
= 3 V unless otherwise noted)
REV. A