AAT1401 Datasheet, PDF (4/19 Pages) List of Unclassifed Manufacturers – FOUR-CHANNEL DIGITAL STILL CAMERA POWER SUPPLY

DATA SHEET
AAT1401
Serial LED Driver with Filtered PWM and 32-Step S2C Dimming Control
Electrical Characteristics¹
V_IN = 3.6V, C_IN = 4.7µF, C_OUT = 0.1µF, L = 10µH, R_SET = 10KΩ, T_A = -40°C to 85°C unless otherwise noted. Typical values
are at T_A= 25°C.
Symbol
V_IN
V_OUT
I_Q
I_SHDN
I_QSW
R_DS(ON)N
η
F_osc
Description
Input Voltage Range
Maximum Output Voltage
Quiescent Supply Current
Input Shutdown Current
Input Switching Current
NMOS On-Resistance
Maximum Efficiency
Switching Frequency
T_SS
Soft-Start Time
D_MAX
V_OVP-T
V_OVPH
T_SD
T_HYS
V_CS
I_CS(ACC)
V_RSET
EN/SET
V_{EN/SET (L)}
V_{EN/SET (H)}
t_EN/SET(LOW)
t_{EN/SET(HI_MIN)}
t_{EN/SET(HIMAX)}
t_EN/SET(OFF)
t_EN/SET(LAT)
I_{EN/SET (LK)}
PWM
V_PWM(L)
V_PWM(H)
I_PWM(LK)
Maximum Duty Cycle
OUT Over-Voltage Protection Threshold
Over-Voltage Protection Hysteresis
Over-Temperature Shutdown Threshold
Over-Temperature Shutdown Hysteresis
Current Sink Voltage
Current Sink Accuracy
RSET Voltage
EN/SET
EN/SET
EN/SET Input Low Time
EN/SET Minimum High Time
EN/SET Maximum High Time
EN/SET Input Off Timeout
EN/SET Latch Timeout
EN Input Leakage
Logic Threshold Low
Logic Threshold High
PWM Input Leakage
Conditions
V_ENSET = V_IN
V_ENSET = 0V
V_ENSET = V_IN
T_A = 25°C
I_OUT = 31mA
T_A = 25°C
V_ENSET = V_IN to 95% of output regulation,
C_COMP = 56nF
V_OVP rising
I_OUT = 31mA
R_SET = 10KΩ
R_SET = 10KΩ
V_IN = 2.7V to 5.5V
V_IN = 2.7V to 5.5V
V_ENSET = 5V, V_IN = 5V
V_PWM = 5V, V_IN = 5V
Min
2.7
Typ
430
2.3
650
85
1.0
Max
5.5
28
700
1
Units
V
V
µA
µA
mA
mΩ
%
MHz
4
ms
94.0
%
1.1 1.2 1.3
V
75
mV
155
°C
15
°C
500
mV
27.9 31.0 34.1 mA
1.206
V
0.4
V
1.4
V
0.3
75
µs
100
ns
75
µs
500
µs
500
µs
-1
1
µA
0.4
V
1.4
V
-1
1
µA
1. The AAT1401 is guaranteed to meet performance specification over the –40°C to +85°C operating temperature range, and is assured by design, characterization and correla-
tion with statistical process controls.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
4
202113A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • June 27, 2012