ADP1148 datasheet(2/16 Pages) AD

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REV. A

ADP1148, ADP1148-3.3, ADP1148-5–SPECIFICATIONS

ELECTRICAL CHARACTERISTICS

Parameter

Symbol

Conditions2

Min

Typ

Max

Units

FEEDBACK VOLTAGE

ADP1148 Only

V10

VIN = 9 V

1.21

1.25

1.29

FEEDBACK CURRENT

ADP1148 Only

I10

0.2

1.0

µA

REGULATED OUTPUT VOLTAGE

VOUT

VIN = 9 V

ADP1148-3.3

ILOAD = 700 mA

3.23

3.33

3.43

ADP1148-5

ILOAD = 700 mA

4.9

5.05

5.2

OUTPUT VOLTAGE LINE

TA = +25

°C, V

IN = 7 V to 12 V,

REGULATION

dVOUT

ILOAD = 50 mA

–40

+40

OUTPUT VOLTAGE LOAD

REGULATION

dVOUT

ADP1148-3.3

5 mA < ILOAD < 2 A

ADP1148-5

5 mA < ILOAD < 2 A

100

SLEEP MODE OUTPUT RIPPLE

dVOUT

ILOAD = 0 A

mV p-p

INPUT DC SUPPLY CURRENT3

TA = +25

°C

Normal Mode

VIN = 4 V < VIN < 18 V

1.6

2.3

Sleep Mode (ADP1148-3.3)

VIN = 4 V < VIN < 18 V

160

250

µA

Sleep Mode (ADP1148-5)

VIN = 4 V < VIN < 18 V

160

250

µA

Shutdown

VSHUTDOWN = 2.1 V,

µA

4 V < VIN < 15 V

CURRENT SENSE THRESHOLD

V8–V7

V9 = VOUT/4 + 25 mV (Forced),

VOLTAGE

V7 = 5 V, TA = +25

°C25

ADP1148 Only

V9 = VOUT/4 mV – 25 mV (Forced),

V7 = 5 V

130

150

170

ADP1148-3.3

V7 = VOUT + 100 mV (Forced)

V7 = VOUT – 100 mV (Forced)

130

150

170

ADP1148-5

V7 = VOUT + 100 mV (Forced

V7 = VOUT – 100 mV (Forced)

130

150

170

SHUTDOWN PIN THRESHOLD

ADP1148-3.3, ADP1148-5

V10

TA = +25

°C

0.6

0.8

2.0

SHUTDOWN PIN INPUT CURRENT

I10

0 V < VSHUTDOWN < 8 V, VIN = 18 V

1.2

µA

CT PIN DISCHARGE CURRENT

TA = +25

°C, V

OUT in Regulation,

V7 = VOUT,

506590

µA

VOUT = 0 V

µA

OFF-TIME

tOFF

CT = 390 pF, ILOAD = 700 mA

µs

DRIVER OUTPUT TRANSITION

tR, tF

CL = 3000 pF (Pins 1, 14)

TIMES

VIN = 6 V, TA = +25°C

100

200

NOTES

1All limits at temperature extremes are guaranteed via correlation using standard Quality Control methods. Specifications subject to change without notice.

J is calculated from the ambient temperature T A and power dissipation PD according to the following formulas:

ADP1148AR, ADP1148AR-3.3, ADP1148AR-5:

TJ = TA + (PD × 110°C/W)

ADP1148AN, ADP1148AN-3.3, ADP1148AN-5:

TJ = TA + (PD × 70°C/W)

3Dynamic 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.

4The ADP1148 version is tested with external feedback resistors, setting the nominal output voltage to 3.3 V.

Specifications subject to change without notice.

(0 C

≤ T

≤ +70 C,1 V

IN = 10 V, VSHUTDOWN = 0 V, unless otherwise noted. See Figure 17.)

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