AAT1232 Datasheet, PDF (4/17 Pages) Advanced Analogic Technologies – 24V 100mA Step-Up Converter

AAT1232
24V 100mA Step-Up Converter
Electrical Characteristics¹
T_A = -40°C to +85°C, unless otherwise noted. Typical values are T_A = 25°C, V_IN = 3.6V.
Symbol
Power Supply
V_IN
V_OUT(MAX)
V_UVLO
I_Q
I_SHDN
I_OUT
FB1
FB2
ΔV_LOADREG
ΔV_LINEREG/ΔV_IN
R_DS(ON)L
R_DS(ON)IN
T_SS
T_SD
T_HYS
I_LIM
SEL, EN/SET
V_SEL(L)
V_SEL(H)
V_EN/SET(L)
V_EN/SET(H)
T_{EN/SET LO}
T_{EN/SET HI MIN}
T_{EN/SET HI MAX}
T_OFF
T_LAT
I_EN/SET
Description
Conditions
Min Typ Max Units
Input Voltage Range
Maximum Output Voltage
UVLO Threshold
Quiescent Current
V_IN Pin Shutdown Current
Output Current
FB1 Reference Voltage
FB2 Reference Voltage
Load Regulation
Line Regulation
Low Side Switch On Resistance
Input Disconnect Switch
On Resistance
Soft-Start Time
Over-Temperature Shutdown
Threshold
Shutdown Hysteresis
N-Channel Current Limit
V_IN Rising
Hysteresis
V_IN Falling
SEL = GND, V_OUT = 18V,
I_OUT = 0, R3 = 20kΩ², Switching
SEL = GND, FB2 = 1.5V,
Not Switching
EN/SET = GND
2.7V < V_IN < 5.5V, V_OUT = 24V
I_OUT = 0 to 100mA, V_IN = 2.7V
to 5.0V, SEL = High
I_OUT = 0 to 100mA, V_IN = 2.7V
to 5.0V, SEL = Low
I_OUT = 0 to 100mA, R3 = 20kΩ³
V_IN = 2.7V to 5.5V, R3 = 20kΩ³
2.7
1.8
1.164
0.582
150
0.3
40
1.2
0.6
0.02
0.6
0.08
5.5
24
2.7
70
1.0
100
1.236
0.618
0.18
From Enable to Output
Regulation; V_OUT = 15V
0.35
140
15
V_IN = 3.6V
3.0
V
V
V
mV
V
mA
µA
µA
mA
V
V
%/mA
%/V
Ω
Ω
ms
°C
°C
A
SEL Threshold Low
SEL Threshold High
Enable Threshold Low
Enable Threshold High
EN/SET Low Time
Minimum EN/SET High Time
Maximum EN/SET High Time
EN/SET Off Timeout
EN/SET Latch Timeout
EN/SET Input Leakage
V_IN = 2.7V
V_IN = 5.5V
V_IN = 2.7V
V_IN = 5.5V
0.4
V
1.4
V
0.4
V
1.4
V
0.3
75
µs
50
ns
75
µs
500 µs
500 µs
-1
1
µA
1. The AAT1232 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. Switching input current will vary with R1, R2, R3 resistor values.
3. Some improvement in line and load regulation is possible with smaller resistor values.
4
1232.2006.12.1.3