AQ1541 Datasheet, PDF (4/10 Pages) Acutechnology Semiconductor – Low Dropout 1 Amp Voltage Regulator with Enable Function

Acutechnology Semiconductor Inc.
AQ1541
Electrical Specifications
Electrical characteristics are guaranteed over the full temperature range 0ºC <Tj< 125ºC. Ambient temperature
must be de-rated based upon power dissipation and package thermal characteristics. Unless otherwise
specified: VENABLE = VIN = (VOUT + 1.5V), IOUT = 10 mA, Tj = 25C. All values in bold are over the full
temperature range.
Symbol Parameter
Conditions
Min Typ Max Units
VOUT Output Voltage (1)
LNREG Line Regulation (1)
LDREG Load Regulation (1)
VD
Drop out Voltage (1, 2)
ISC Current Limit (1)
IQON Quiescent Current ON
IQOFF Quiescent Current Off
VIL Enable Pin Voltage (OFF)
VIH Enable Pin Voltage (ON)
IIL
Enable Pin Current (OFF)
IIH
Enable Pin Current (ON)
VADJ Reference Voltage
IADJ
∆ IADJ
IQMIN
TC
TS
Adjust Pin Current (5)
Adjust Pin Current (5)
Change
Minimum Load Current (5)
Temperature Coefficient
Temperature Stability
0°C ≤Tj ≤ 125°C
∆VIN = VOUT + (1.5V to 10V)
∆IOUT = (10mA to 1 Amp)
IOUT = 100 mA
IOUT = 500 mA
IOUT = 1 Amp
VIN-VOUT = 2V
VIN = VENABLE = 5V
0°C ≤Tj ≤ 125°C
VIN = 5V VENABLE = GND
0°C ≤Tj ≤ 125°C
With respect to GND
With respect to VOUT
ENABLE = 0V, VIN = 5V
ENABLE = VIN = 5V
Adjustable version only
0°C ≤Tj ≤ 125°C
Adjustable version only
10mA ≤ IOUT≤ 1Amp
1.4 ≤ VIN ≤ 18V
To Maintain regulation
VN
RMS Output Noise (3)
PSRR Ripple Rejection Ratio (4) Vin = 5V
TSD Thermal Shutdown
Junction Temperature
TSDHYST TSD Hysteresis
Notes: (1) Low duty cycle pulse testing with Kelvin connections required.
(2) Measure (VIN - VOUT) when ∆VOUT, OR ∆VREF = 1%
(3) Bandwidth of 10Hz to 10kHz
(4) 120Hz input ripple
(5) Adjustable version only
-1 VOUT +1
%
-1.5 VOUT +1.5 %
0.035 0.2 %
0.2 0.4 %
0.91 0.95 V
0.93 0.95 V
0.95 1.0
V
1.1 1.5
A
7.5 9.0 mA
10 mA
0.1 0.5 µA
0.1 1.0 µA
0.25 0.45
V
0.5 0.8
V
0.1 1.0 µA
10 25 µA
1.208 1.220 1.232 V
1.202
1.238 V
20 40 µA
0.2 5.0 µA
0.5 2.0 mA
0.005
%/°C
0.5
0.003
60 72
%/°C
%
VOUT
dB
150
°C
25
°C
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4
Rev. 2.2 September 13, 2005