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AAT1231 データシート(PDF) 4 Page - Advanced Analogic Technologies

部品番号 AAT1231
部品情報  Step-Up DC/DC Converters for White LED Backlight Applications
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メーカー  ANALOGICTECH [Advanced Analogic Technologies]
ホームページ  http://www.analogictech.com
Logo ANALOGICTECH - Advanced Analogic Technologies

AAT1231 データシート(HTML) 4 Page - Advanced Analogic Technologies

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Electrical Characteristics1
TA = -40°C to +85°C unless otherwise noted. Typical values are at 25°C, VIN = 3.6V.
Symbol
Description
Conditions
Min
Typ
Max
Units
Power Supply
PVIN, VIN
Input Voltage Range
2.7
5.5
V
VOUT(MAX)
Maximum Output Voltage
24
V
IQ
Operating Current
SEL = GND, FB = 0.1V
40
70
µA
ISHDN
Shutdown Current
EN/SET = GND
1.0
µA
IOUT
Maximum Continuous Output
2.7V < VIN < 5.5V, VOUT = 24V
50
mA
Current2
ΔVLINEREG(FB)/
Line Regulation
VIN = 2.7V to 5.5V, VFB = 0.6V
0.7
%/V
ΔVIN
RDS(ON) L
Low Side Switch On Resistance
80
m
Ω
RDS(ON) IN
Input Disconnect Switch
180
m
Ω
On Resistance
TSS
Soft-Start Time
From Enable to Output Regulation;
300
µs
VFB = 300mV
VOVP
Over-Voltage Protection Threshold VOUT Rising
1.1
1.2
1.3
V
Over-Voltage Hysteresis
VOUT Falling
100
mV
ILIMIT
N-Channel Current Limit
2.5
A
TSD
TJ Thermal Shutdown Threshold
140
°C
THYS
TJ Thermal Shutdown Hysteresis
15
°C
SEL, EN/SET
VSEL(L)
SEL Threshold Low
0.4
V
VSEL(H)
SEL Threshold High
1.4
V
VEN/SET(L)
Enable Threshold Low
0.4
V
VEN/SET(H)
Enable Threshold High
1.4
V
TEN/SET (LO)
EN/SET Low Time
VEN/SET < 0.6V
0.3
75
µs
TEN/SET(HI)
EN/SET High Time
VEN/SET > 1.4V
75
µs
TOFF
EN/SET Off Timeout
VEN/SET < 0.6V
500
µs
TLAT
EN/SET Latch Timeout
VEN/SET > 1.4V
500
µs
IEN/SET
EN/SET Input Leakage
VEN/SET = 5V VIN = 5V
-1
1
µA
AAT1231
VIN = 2.7V to 5.5V, SEL = GND,
0.09
0.1
0.11
FB
FB Pin Regulation
EN/SET = HIGH
V
VIN = 2.7V to 5.5V, SEL = HIGH,
0.564
0.6
0.636
EN/SET = DATA16
AAT1231-1
VIN = 2.7V to 5.5V, SEL = GND,
0.09
0.1
0.11
FB
FB Pin Regulation
EN/SET = DATA16
V
VIN = 2.7V to 5.5V, SEL = HIGH,
0.564
0.6
0.636
EN/SET = HIGH
AAT1231/1231-1
Step-Up DC/DC Converters for
White LED Backlight Applications
4
1231.2007.01.1.2
1. Specification over the -40°C to +85°C operating temperature range is assured by design, characterization, and correlation with statis-
tical process controls.
2. Maximum continuous output current increases with reduced output voltage, but may vary depending on operating efficiency and ther-
mal limitations.


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