AAT1239-1_0810 Datasheet, PDF (4/23 Pages) Advanced Analogic Technologies – 40V Step-Up Converter for 4 to 10 White LEDs

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PRODUCT DATASHEET
AAT1239-1
40V Step-Up Converter for 4 to 10 White LEDs
Electrical Characteristics¹
T_A = -40°C to +85°C unless otherwise noted. Typical values are at 25°C, V_IN = 3.6V.
Symbol
Power Supply
PV_IN, V_IN
V_OUT(MAX)
I_Q
I_SHDN
I_OUT
ΔV_LINEREG(FB)/ΔV_IN
R_{DS(ON) L}
R_{DS(ON) IN}
T_SS
V_OVP
I_LIMIT
T_SD
T_HYS
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)
T_OFF
T_LAT
I_EN/SET
AAT1239-1
V_FB
Description
Input Voltage Range
Maximum Output Voltage
Operating Current
Shutdown Current
Maximum Continuous Output
Current²
Line Regulation
Low Side Switch On Resistance
Input Disconnect Switch
On Resistance
Soft-Start Time
Over-Voltage Protection Threshold
Over-Voltage Hysteresis
N-Channel Current Limit
T_J Thermal Shutdown Threshold
T_J Thermal Shutdown Hysteresis
SEL Threshold Low
SEL Threshold High
Enable Threshold Low
Enable Threshold High
EN/SET Low Time
EN/SET High Time
EN/SET Off Timeout
EN/SET Latch Timeout
EN/SET Input Leakage
FB Pin Regulation
Conditions
SEL = GND, FB = 0.1V
EN/SET = GND
2.7V < V_IN < 5.5V, V_OUT = 40V
V_IN = 2.7V to 5.5V, V_FB = 0.6V
From Enable to Output Regulation;
V_FB = 300mV
V_OUT Rising
V_OUT Falling
V_EN/SET < 0.6V
V_EN/SET > 1.4V
V_EN/SET < 0.6V
V_EN/SET > 1.4V
V_EN/SET = 5V V_IN = 5V
V_IN = 2.7V to 5.5V, SEL = GND,
EN/SET = DATA16
V_IN = 2.7V to 5.5V, SEL = HIGH,
EN/SET = HIGH
Min Typ Max Units
2.7
5.5
V
40
V
70
μA
1.0
μA
30
mA
0.7
%
135
mΩ
180
mΩ
400
μs
1.1
1.2
1.3
V
100
mV
2.5
A
140
°C
15
°C
0.4
V
1.4
V
0.4
V
1.4
V
0.3
75
μs
75
μs
500
μs
500
μs
-1
1
μA
0.085 0.1 1.115
V
0.54 0.6 0.66
1. Specification over the -40°C to +85°C operating temperature range is assured by design, characterization, and correlation with statistical process controls.
2. Maximum continuous output current increases with reduced output voltage, but may vary depending on operating efficiency and thermal limitations.
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1239-1.2008.10.1.2