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| AAT2506 Datasheet, PDF (4/26 Pages) Advanced Analogic Technologies – 1MHz Step-Down Converter/LDO Regulator | |||
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AAT2506
1MHz Step-Down Converter/LDO Regulator
Electrical Characteristics1
Symbol
LDO
VOUT
VIN
VDO
âVOUT/
VOUT*âVIN
âVOUT(Line)
âVOUT(Load)
IOUT
ISC
IQLDO
ISHDN
PSRR
TSD
THYS
eN
TC
Description
Conditions
Min Typ Max Units
VIN = VLDO = VOUT(NOM) + 1V for VOUT options greater than 1.5V. VIN = VLDO = 2.5V for VOUT ⤠1.5V. IOUT =
1mA, COUT = 2.2µF, CIN = 1µF, TA = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C.
TA = 25°C
-1.5
1.5
Output Voltage Tolerance
IOUT = 1mA to 300mA TA = -40°C
-2.5
to 85°C
2.5
%
Input Voltage
Dropout Voltage3, 4
IOUT = 300mA
VOUT+VDO2
5.5
V
400 600 mV
Line Regulation
VIN = VOUT + 1V to 5V
0.09 %/V
Dynamic Line Regulation
IOUT = 300mA, VIN = VOUT + 1V to
VOUT + 2V, TR/TF = 2µS
2.5
mV
Dynamic Load Regulation
IOUT = 1mA to 300mA, TR <5µS
60
mV
Output Current
VOUT > 1.3V
300
mA
Short-Circuit Current
VOUT < 0.4V
600
mA
LDO Quiescent Current
VIN = 5V, No Load, ENLDO = VIN
70 125
µA
Shutdown Current
VIN = 5V; ENLDO = GND,
EN = SGND = PGND
1.0
µA
1kHz
67
Power Supply Rejection Ratio IOUT = 10mA, CBYP = 10nF 10kHz
1MHz
47
dB
45
Over-Temperature Shutdown
Threshold
145
°C
Over-Temperature Shutdown
Hysteresis
12
°C
Output Noise
Output Voltage Temperature
Coefficient
eNBW = 300Hz to 50kHz
50
µVRMS
22
ppm/°C
1. The AAT2506 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured
by design, characterization, and correlation with statistical process controls.
2. To calculate the minimum LDO input voltage, use the following equation: VIN(MIN) = VOUT(MAX) + VDO(MAX), as long as VIN ⥠2.5V.
3. For VOUT <2.1V, VDO = 2.5 - VOUT.
4. VDO is defined as VIN - VOUT when VOUT is 98% of nominal.
4
2506.2005.12.1.0
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