AP7173 Datasheet, PDF (6/15 Pages) Diodes Incorporated – 1.5A LOW DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START

AP7173
1.5A LOW DROPOUT LINEAR REGULATOR WITH
PROGRAMMABLE SOFT-START
Electrical Characteristics
At V_EN = 1.1V, V_IN = V_OUT + 0.5V, C_VCC = 0.1uF, C_IN = C_OUT = 10uF, I_OUT = 50mA, V_VCC = 5.0V, and T_A = –40°C to +85°C, unless otherwise
noted. Typical values are at T_A = +25°C.
Symbol
Parameter
Test Conditions
Min
Typ. Max Unit
V_IN
V_VCC
V_REF
V_OUT
ΔV_OUT /ΔV_IN / V_OUT
ΔV_OUT /V_OUT /ΔI_OUT
V_DO
I_CL
I_SHORT
I_VCC
I_SHDN
I_FB
PSRR
T_ST
I_SS
V_{EN, HI}
V_{EN, LO}
V_{EN, HYS}
I_EN
V_{PG, TH}
V_{PG, HYS}
V_{PG, LO}
I_{PG, LKG}
T_SD
θ_JA
Input Voltage Range
Bias Pin Voltage Range
(Note 7)
Internal Reference
(Adj.)
T_A = +25 ºC
Output Voltage Range
Accuracy (Note 8)
Line Regulation
Load Regulation
Dropout Voltage
(Note 9)
V_IN= 5V, I_OUT= 1.5A
2.97V≤V_VCC≤5.5V,
50mA≤I_OUT≤1.5A
V_{OUT (NOM)} + 0.5≤V_IN, 5.5V
50mA≤I_OUT≤1.5A
I_OUT = 1.5A,V_VCC–V_OUT(NOM)≥3.25V
I_OUT= 1.5A, V_IN = V_VCC
Current Limit
V_OUT = 80% x V_{OUT (NOM)}
Short-Circuit Current V_OUT < 0.2V
Bias Pin Current
Shutdown Supply
Current (I_GND)
V_EN≤0.4V
Feedback Pin Current
1KHz, I_OUT= 1A,
Power-Supply Rejection V_IN= 1.8V, V_OUT= 1.5V
(V_IN to V_OUT)
300KHz, I_OUT =1A,
V_IN= 1.8V, V_OUT =1.5V
1KHz, I_OUT = 1A,
Power-SupplyRejection VI_N= 1.8V, V_OUT =1.5V
(V_VCC to V_OUT)
300KHz, I_OUT = 1A,
V_IN= 1.8V, V_OUT =1.5V
Startup Time
R_LOAD for I_OUT = 1.0A, C_SS = open
Soft-Start Charging
Current
V_SS= 0.4V
Enable Input High Level
Enable Input Low Level
Enable Pin Hysteresis
Enable Pin Current
V_EN= 5V
PG Trip Threshold
V_OUT decreasing
PG Trip Hysteresis
PG Output Low Voltage I_PG= 1mA (sinking), V_OUT<V_PG, _TH
PG Leakage Current V_PG= 5.25V, V_OUT>V_PG, _TH
Thermal Shutdown
Shutdown, temperature increasing
Temperature
Reset, temperature decreasing
Thermal Resistance ^{DFN3030-10 (Note 10)}
Junction-to-Ambient _{SOP-8L-EP (Note 11)}
V_OUT + V_DO
2.7
0.792
0.8
0.8
–2
±0.5
0.03
0.09
165
1.5
2
3
0.6
1
1
1
–1
0.1
60
30
50
30
100
440
1.1
0
50
0.1
85
90
3
0.1
+150
+130
38
30
5.5
V
5.5
V
0.808 V
3.3
V
2
%
%/V
%/A
270 mV
1.7
V
4
A
A
2
mA
50
µA
1
µA
dB
dB
µS
nA
5.5
V
0.4
V
mV
1
µA
94 %V_OUT
%V_OUT
0.3
V
1
µA
ºC
o_C/W
Notes:
7. V_VCC should be higher or equal to V_IN in this chip.
8. Tested at 0.8V; resistor tolerance is not taken into account.
9. Dropout is defined as the voltage from V_IN to V_OUT when V_OUT is 3% below nominal.
10. Test condition for DFN3030-10: Device mounted on FR-4 substrate (2s2p), 2"*2" PCB, with 2oz copper trace thickness and large pad pattern.
11. Test condition for SOP-8L-EP: Device mounted on FR-4 substrate (2s2p), 2"*2" PCB, with 2oz copper trace thickness and large pad pattern.
AP7173 Rev. 4
6 of 15
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MARCH 2008
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