AAT1142IWP-1.8-T1 View Datasheet(PDF) - Advanced Analogic Technologies
Part Name
Description
MFG CO.
'AAT1142IWP-1.8-T1' PDF : 21 Pages View PDF
SwitchRegTM
PRODUCT DATASHEET
AAT1142
800mA Voltage-Scaling Step-Down Converter
Electrical Characteristics1
L = 2.2μH, CIN = COUT = 10μF, VIN = 3.6V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA =
25°C.
Symbol Description
Step-Down Converter
VIN
Input Voltage
VUVLO
UVLO Threshold
VOUT
Output Voltage Tolerance
VOUT
VOUT Programmable Range
VSLEW
Output Voltage Programming Slew Rate
IQ
Quiescent Current
ISHDN
Shutdown Current
ILIM
P-Channel Current Limit
RDS(ON)H
High Side Switch On Resistance
RDS(ON)L
Low Side Switch On Resistance
ILXLEAK
LX Leakage Current
ΔVOUT/
VOUT*ΔVIN
Line Regulation
ROUT
Output Impedance
TS
Start-Up Time
FOSC
Oscillator Frequency
FSYNC
SYNC Frequency Range
TSD
Over-Temperature Shutdown Threshold
THYS
Over-Temperature Shutdown Hysteresis
EN/SET and MODE/SYNC
VEN/SET(L)
VEN/SET(H)
TEN/SET(L)
TEN/SET(H)
TOFF
TLATCH
IEN/SET
Enable Threshold Low
Enable Threshold High
EN/SET Low Time
EN/SET High Time
EN/SET Timeout
EN/SET Latch Timeout
Input Low Current
VMODE/SYNC(L) Enable Threshold Low
Conditions
VIN Rising
Hysteresis
VIN Falling
IOUT = 0mA to 800mA, VIN = 2.7V to 5.5V
COUT = 10μF
No Load
EN/SET = AGND = PGND
VIN = 5.5V, VLX = 0V to VIN
VIN = 2.7V to 5.5V
From Enable to Output Regulation
VEN/SET < 0.6V
VEN/SET > 1.4V
VEN/SET < 0.6V
VEN/SET > 1.4V
VIN = VFB = 5.5V
VMODE/SYNC(H)
IMODE/SYNC
Enable Threshold High
Input Low Current
Min Typ Max Units
2.7
5.5
V
2.7
V
250
mV
2.0
V
-3.0
3.0
%
0.6
2.0
V
10
mV/μs
35 70
μA
1.0
μA
1.0
A
0.29
Ω
0.24
Ω
1
μA
0.2
%/V
250
100
2.2
1.0
3.0
140
15
kΩ
μs
MHz
MHz
°C
°C
0.6
V
1.4
V
0.3
75
μs
50 75
μs
500
μs
500
μs
-1.0
1.0
μA
VIN ·
0.4
V
VIN ·
0.7
V
-1.0
1.0
μA
1. The AAT1142 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured by design, characterization, and correla-
tion with statistical process controls.
4
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1142.2009.08.1.1
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