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ADP1108 Datasheet(PDF) 2 Page - Analog Devices

Part No. ADP1108
Description  Micropower DC-DC Converter Adjustable and Fixed 3.3 V, 5 V, 12 V
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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ADP1108 Datasheet(HTML) 2 Page - Analog Devices

 
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REV. 0
–2–
ADP1108–SPECIFICATIONS
Parameter
Symbol
Conditions
Min
Typ
Max
Units
QUIESCENT CURRENT
IQ
Switch Off
90
150
µA
QUIESCENT CURRENT,
IQ
No Load, TA = +25
°C
BOOST MODE CONFIGURATION
ADP1108-3.3
90
µA
ADP1108-5
90
µA
ADP1108-12
90
µA
INPUT VOLTAGE
VIN
Step-Up Mode
2.0
12.6
V
Step-Down Mode
30
V
COMPARATOR TRIP POINT VOLTAGE
ADP1108
1
1.20
1.245
1.30
V
OUTPUT SENSE VOLTAGE
VOUT
ADP1108-3.3
2
3.13
3.3
3.46
V
ADP1108-5
2
4.75
5.00
5.25
V
ADP1108-12
2
11.4
12.0
12.6
V
COMPARATOR HYSTERESIS
ADP1108
5
12
mV
OUTPUT HYSTERESIS
ADP1108-3.3
13
30
mV
ADP1108-5
20
55
mV
ADP1108-12
50
100
mV
OSCILLATOR FREQUENCY
14
19
25
kHz
DUTY CYCLE
Full Load
55
70
78
%
SWITCH ON TIME
tON
ILIM Tied to VIN
25
36
48
µs
FEEDBACK PIN BIAS CURRENT
VFB = 0 V
25
200
nA
SET PIN BIAS CURRENT
VSET = VREF
60
130
nA
GAIN BLOCK OUTPUT LOW
VOL
ISINK = 100
µA, V
SET = 1.00 V
0.15
0.4
V
REFERENCE LINE REGULATION
2.0 V
≤ V
IN
≤ 5 V
0.2
0.4
%/V
5 V
≤ V
IN ≤ 30 V
0.02
0.075
%/V
SWSAT VOLTAGE, STEP-UP MODE
VSAT
VIN = 3.0 V, ISW = 650 mA
0.5
0.75
V
VIN = 5.0 V, ISW = 1 A,
0.8
1.00
V
TA = +25
°CV
SWSAT VOLTAGE, SAT
VIN = 12 V, ISW = 650 mA,
TA = +25
°C
1.1
1.5
V
STEP-DOWN MODE
1.7
V
GAIN BLOCK GAIN
AV
RL = 100K
3
400
1000
V/V
CURRENT LIMIT
220
Ω from I
LIM to VIN,
TA = +25
°C
500
mA
CURRENT LIMIT TEMPERATURE
COEFFICIENT
–0.3
%/
°C
SWITCH OFF LEAKAGE CURRENT
Measured at SW1 Pin,
TA = +25
°C1
10
µA
MAXIMUM EXCURSION BELOW GND
VSW2
1SW1
≤ 10 µA, Switch Off
TA = +25
°C
–400
–350
mV
NOTES
1This specification guarantees that both the high and low trip points of the comparator fall within the 1.20 V to 1.30 V range.
2The 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.
3100 k
Ω resistor connected between a 5 V source and the AO pin.
All limits at temperature extremes are guaranteed via correlation using standard Quality Control methods.
Specifications subject to change without notice.
(0 C to +70 C, VIN = 3.0 V unless otherwise noted)


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