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ADP1148AN Datasheet(PDF) 3 Page - Analog Devices

Part # ADP1148AN
Description  High Efficiency Synchronous Step-Down Switching Regulators
Download  16 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADP1148AN Datasheet(HTML) 3 Page - Analog Devices

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–3–
REV. A
ADP1148, ADP1148-3.3, ADP1148-5
ELECTRICAL CHARACTERISTICS
Parameter
Symbol
Conditions2
Min
Typ
Max
Units
FEEDBACK VOLTAGE
ADP1148 Only
V10
VIN = 9 V
1.20
1.25
1.30
V
REGULATED OUTPUT VOLTAGE
VOUT
VIN = 9 V
ADP1148-3.3
ILOAD = 700 mA
3.17
3.33
3.4
V
ADP1148-5
ILOAD = 700 mA
4.85
5.05
5.2
V
INPUT DC SUPPLY CURRENT3
IQ
Normal Mode
VIN = 4 V < VIN < 18 V
1.6
2.6
mA
Sleep Mode (ADP1148-3)
VIN = 4 V < VIN < 18 V
160
280
µA
Sleep Mode (ADP1148-5)
VIN = 6 V < VIN < 18 V
160
280
µA
Shutdown
VSHUTDOWN = 2.1 V,
10
24
µA
4 V < VIN < 12 V
CURRENT SENSE THRESHOLD
VOLTAGE4
V8–V7
ADP1148 Only
V9 = VOUT/4 + 25 mV (Forced),
0
mV
V7 = 5 V
V9 = VOUT/4 – 25 mV (Forced),
115
150
175
mV
V7 = 5 V
ADP1148-3.3
V7 = VOUT + 100 mV (Forced)
0
mV
V7 = VOUT – 100 mV (Forced)
115
150
175
mV
ADP1148-5.0
V7 = VOUT + 100 mV (Forced)
0
mV
V7 = VOUT – 100 mV (Forced)
115
150
175
mV
SHUTDOWN PIN THRESHOLD
V10
ADP1148-3.3, ADP1148-5
0.55
0.8
2
V
OFF-TIME
tOFF
CT = 390 pF, ILOAD = 700 mA
4
5
6.2
µs
NOTES
1All limits at temperature extremes are guaranteed via correlation using standard Quality Control method.
2T
J is calculated from the ambient temperature T A and power dissipation PD according to the following formulas:
ADP1148AR, ADP1148AR-3, ADP1148AR-5: TJ = TA + (PD × 110°C/W)
ADP1148AN, ADP1148AN-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.
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 VCC
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, VSHUTDOWN = 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


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