ADP1148 Просмотр технического описания (PDF) - Analog Devices
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ADP1148 Datasheet PDF : 16 Pages
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ADP1148, ADP1148-3.3, ADP1148-5–SPECIFICATIONS
ELECTRICAL CHARACTERISTICS (0؇C ≤ TA ≤ +70؇C,1 VIN = 10 V, VSHUTDOWN = 0 V, unless otherwise noted. See Figure 17.)
Parameter
Symbol Conditions2
Min Typ Max Units
FEEDBACK VOLTAGE
ADP1148 Only
V10
VIN = 9 V
1.21 1.25 1.29 V
FEEDBACK CURRENT
ADP1148 Only
I10
0.2 1.0
µA
REGULATED OUTPUT VOLTAGE
ADP1148-3.3
ADP1148-5
VOUT
VIN = 9 V
ILOAD = 700 mA
ILOAD = 700 mA
3.23 3.33 3.43 V
4.9 5.05 5.2
V
OUTPUT VOLTAGE LINE
REGULATION
TA = +25°C, VIN = 7 V to 12 V,
dVOUT
ILOAD = 50 mA
–40
+40
mV
OUTPUT VOLTAGE LOAD
REGULATION
ADP1148-3.3
ADP1148-5
dVOUT
5 mA < ILOAD < 2 A
5 mA < ILOAD < 2 A
40 65
mV
60 100
mV
SLEEP MODE OUTPUT RIPPLE
INPUT DC SUPPLY CURRENT3
Normal Mode
Sleep Mode (ADP1148-3.3)
Sleep Mode (ADP1148-5)
Shutdown
dVOUT
IQ
ILOAD = 0 A
TA = +25°C
VIN = 4 V < VIN < 18 V
VIN = 4 V < VIN < 18 V
VIN = 4 V < VIN < 18 V
VSHUTDOWN = 2.1 V,
4 V < VIN < 15 V
50
1.6 2.3
160 250
160 250
10 20
mV p-p
mA
µA
µA
µA
CURRENT SENSE THRESHOLD
VOLTAGE4
ADP1148 Only
ADP1148-3.3
ADP1148-5
V8–V7
V9 = VOUT/4 + 25 mV (Forced),
V7 = 5 V, TA = +25°C
25
mV
V9 = VOUT/4 mV – 25 mV (Forced),
V7 = 5 V
130 150 170
mV
V7 = VOUT + 100 mV (Forced)
25
mV
V7 = VOUT – 100 mV (Forced)
130 150 170
mV
V7 = VOUT + 100 mV (Forced
25
mV
V7 = VOUT – 100 mV (Forced)
130 150 170
mV
SHUTDOWN PIN THRESHOLD
ADP1148-3.3, ADP1148-5
V10
TA = +25°C
0.6 0.8 2.0
V
SHUTDOWN PIN INPUT CURRENT I10
0 V < VSHUTDOWN < 8 V, VIN = 18 V
1.2 5
µA
CT PIN DISCHARGE CURRENT
I4
TA = +25°C, VOUT in Regulation,
V7 = VOUT,
VOUT = 0 V
50 65 90
µA
2
10
µA
OFF-TIME
tOFF
CT = 390 pF, ILOAD = 700 mA
4
5
6
µs
DRIVER OUTPUT TRANSITION
TIMES
tR, tF
CL = 3000 pF (Pins 1, 14)
VIN = 6 V, TA = +25°C
100 200
ns
NOTES
1All limits at temperature extremes are guaranteed via correlation using standard Quality Control methods. Specifications subject to change without notice.
2TJ is calculated from the ambient temperature TA 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.
–2–
REV. A
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