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–3–
REV. A
ADP1148, ADP1148-3.3, ADP1148-5
ELECTRICAL CHARACTERISTICS
Parameter Symbol Conditions
2
Min Typ Max Units
FEEDBACK VOLTAGE
ADP1148 Only V
10
V
IN
= 9 V 1.20 1.25 1.30 V
REGULATED OUTPUT VOLTAGE V
OUT
V
IN
= 9 V
ADP1148-3.3 I
LOAD
= 700 mA 3.17 3.33 3.4 V
ADP1148-5 I
LOAD
= 700 mA 4.85 5.05 5.2 V
INPUT DC SUPPLY CURRENT
3
I
Q
Normal Mode V
IN
= 4 V < V
IN
< 18 V 1.6 2.6 mA
Sleep Mode (ADP1148-3) V
IN
= 4 V < V
IN
< 18 V 160 280 µA
Sleep Mode (ADP1148-5) V
IN
= 6 V < V
IN
< 18 V 160 280 µA
Shutdown V
SHUTDOWN
= 2.1 V, 10 24 µA
4 V < V
IN
< 12 V
CURRENT SENSE THRESHOLD
VOLTAGE
4
V
8
–V
7
ADP1148 Only V
9
= V
OUT
/4 + 25 mV (Forced), 0 mV
V
7
= 5 V
V
9
= V
OUT
/4 – 25 mV (Forced), 115 150 175 mV
V
7
= 5 V
ADP1148-3.3 V
7
= V
OUT
+ 100 mV (Forced) 0 mV
V
7
= V
OUT
– 100 mV (Forced) 115 150 175 mV
ADP1148-5.0 V
7
= V
OUT
+ 100 mV (Forced) 0 mV
V
7
= V
OUT
– 100 mV (Forced) 115 150 175 mV
SHUTDOWN PIN THRESHOLD V
10
ADP1148-3.3, ADP1148-5 0.55 0.8 2 V
OFF-TIME t
OFF
C
T
= 390 pF, I
LOAD
= 700 mA 4 5 6.2 µs
NOTES
1
All limits at temperature extremes are guaranteed via correlation using standard Quality Control method.
2
T
J
is calculated from the ambient temperature T
A
and power dissipation P
D
according to the following formulas:
ADP1148AR, ADP1148AR-3, ADP1148AR-5: T
J
= T
A
+ (P
D
× 110°C/W)
ADP1148AN, ADP1148AN-3, ADP1148AN-5: T
J
= T
A
+ (P
D
× 70°C/W)
3
Dynamic supply current is higher due to the gate charge being delivered at the switching frequency. The allowable operating frequency may be limited by power
dissipation at high input voltages.
4
The ADP1148 version is tested with external feedback resistors setting the nominal output voltage to 3.3 V.
Specifications subject to change without notice.
ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage (Pin 3) . . . . . . . . . . . . . –0.3 V to +20 V
Continuous Output Currents (Pins 1, 14) . . . . . . . . . . 50 mA
Sense Voltages (Pins 7, 8) . . . . . . . . . . . . . . . . –0.3 V to V
CC
Operating Temperature Range . . . . . . . . . . . . 0°C to +70°C
Extended Commercial Temperature Range . . –40°C to +85°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . 300°C
(–40؇C ≤ T
A
≤ +85؇C,
1
V
IN
= 10 V, V
SHUTDOWN
= 0 V, unless otherwise noted. See Figure 17.)
ORDERING GUIDE
Output Package Package
Model Voltage Description Option
ADP1148AN ADJ Plastic DIP N-14
ADP1148AR ADJ Small Outline Package SO-14
ADP1148AN-3.3 3.3 V Plastic DIP N-14
ADP1148AR-3.3 3.3 V Small Outline Package SO-14
ADP1148AN-5 5 V Plastic DIP N-14
ADP1148AR-5 5 V Small Outline Package SO-14