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| AAT2786 Datasheet, PDF (5/27 Pages) Advanced Analogic Technologies – 1.5A Step-Down Converter and 150mA LDO | |||
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SystemPowerTM
PRODUCT DATASHEET
AAT2786
1.5A Step-Down Converter and 150mA LDO
Electrical Characteristics (continued)
VLDOIN = VOUT(NOM) + 1V for VOUT options greater than 1.5V. VIN = 2.5 for VOUT â¤1.5V. IOUT = 1mA, COUT = 2.2µF, CIN = 1µF,
TA = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C.
Symbol Description
LDO Regulator
VLDOOUT
Output Voltage Tolerance
ILDOOUT
VDO
ISC
IQ
ISD
ÎVOUT/
VOUT*ÎVIN
ÎVOUT(line)
ÎVOUT(load)
Output Current
Dropout Voltage2, 3
Short-Circuit Current
Ground Current
Shutdown Current
Line Regulation
Dynamic Line Regulation
Dynamic Load Regulation
PSRR
Power Supply Rejection Ratio
eN
TSD
THYS
TC
Enable
VIL
VIH
IEN_BUCK
IEN_LDO
tENDLY
Output Noise
Over-Temperature Shutdown Threshold
Over-Temperature Shutdown Hysteresis
Output Voltage Temperature Coefï¬cient
Enable Threshold Low
Enable Threshold High
Enable Leakage Current
Enable Leakage Current
Enable Delay Time
Conditions
ILDOOUT = 1mA
to 150mA
TA = 25°C
TA = -40°C to 85°C
VLDOOUT > 1.2V
ILDOOUT = 150mA
VLDOOUT < 0.4V
VIN = 5V, No Load, EN = VIN
VIN = 5V, EN = 0V
VIN = VOUT + 1 to 5.0V
VIN = VLDOOUT + 1V to VLDOOUT + 2V,
ILDOOUT = 150mA, TR/TF = 2µs
ILDOOUT = 1mA to 150mA, TR < 5µs
ILDOOUT = 10mA,
CBYP = 10nF
1 kHz
10kHz
1MHz
Noise Power BW = 300Hz - 50kHz
VEN_BUCK = 5V
VEN_LDO = 5V
BYP = Open
Min
-1.5
-2.5
150
1.4
Typ Max
1.5
2.5
200 300
600
70
125
1
0.09
2.5
30
67
47
45
50
145
12
22
0.6
1
1.0
15
Units
%
mA
mV
mA
µA
µA
%/V
mV
mV
dB
µVrms
°C
°C
ppm/°C
V
V
µA
µA
µs
1. VDO is defined as VLDOIN - VLDOOUT when VLDOOUT is 98% of nominal.
2. For VLDOOUT < 2.3V, VDO = 2.5V - VLDOOUT.
2786.2008.04.1.0
www.analogictech.com
5
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