AAT1185 Datasheet, PDF (4/16 Pages) Skyworks Solutions Inc. – High Voltage Step-Down Controller

DATA SHEET
AAT1185
High Voltage Step-Down Controller
Electrical Characteristics¹
V_IN1 = 12.0V; T_A = -40°C to 85°C unless otherwise noted. Typical values are at T_A = 25°C.
Symbol
V_IN
V_UVLO
V_OUT
V_FB
I_Q
I_SHDN
V_OCP
I_LX
D_MAX
T_ON(MIN)
R_DH
R_DL
F_OSC
F_FOLDBACK
T_S
T_SD
V_EN(L)
V_EN(H)
I_EN
Description
Input Voltage
UVLO Threshold
Output Voltage Range
Feedback Pin Voltage
Quiescent Current
Shutdown Current
Over-Current Offset Voltage
LX1 Pin Leakage Current
Maximum Duty Cycle
Minimum On-Time
High Side Drive Source Resistance
Low Side Drive Source Resistance
Oscillator Frequency
Short Circuit Foldback Frequency
Start-Up Time
Over-Temperature Shutdown Threshold
Over-Temperature Shutdown Hysteresis
Enable Threshold Low
Enable Threshold High
Input Low Current
Conditions
V_IN Rising
V_IN Hysteresis
V_IN Falling
V_EN = High, No load
V_EN = Low, V_L = 0V
V_EN = High, V_IN = 6.0V to 24.0V, T_A = 25°C
V_IN = 24.0V, V_EN = Low
V_IN = 6.0V to 24.0V
Pull-Up
Pull-Down
Pull-Up
Pull-Down
Current Limit Triggered
From Enable to Output Regulation
Min
6.0
3.0
0.8
0.591
70
-1.0
350
2.5
-1.0
Typ
300
0.600
1.0
100
85
100
5.0
1.7
5.0
1.7
490
100
2.5
135
15
Max
24.0
5.0
5.5
0.609
30
130
1.0
650
0.6
1.0
Units
V
V
mV
V
V
V
mA
μA
mV
μA
%
ns
Ω
Ω
kHz
kHz
ms
°C
°C
V
V
μA
1. The AAT1185 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.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
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202001A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 31, 2012