AAT4685 Datasheet, PDF (4/17 Pages) Skyworks Solutions Inc. – thermal shutdown protection

DATA SHEET
AAT4685
Over-Voltage Protection Switch with OCP and BOVP
Electrical Characteristics¹
V_IN = 5V, V_BOVP = 4.2V, V_/EN = 0V , R_OCP = 30k , T_A = -40°C to 85°C unless otherwise noted. Typical values are at T_A
= 25°C.
Symbol Description
Conditions
V_IN
I_Q
I_STDBY
Input Voltage Range
Operation Quiescent Current
Standby Current (Only UVLO and OVP
circuit is “Enable”, other function blocks
are all “Disable”)
I_OUT = 0, R_OCP = 30kΩ
EN = 5V, V_OUT = 0
V_UVLO
V_{UVLO_HYS}
TDGL
Under-Voltage Lockout Threshold
Under-Voltage Lockout Hysteresis
Deglitch Time, Input Power Detected
Status
Rising edge
Time measured from V_IN 0V to 5V;
1μs rise time to Output Turn ON
Input OVP – Adjustable (AAT4685-1) ( Measured at OVP pin )
V_{OVP_TH}
V_{OVP_HYS}
Over-Voltage Lockout Threshold
Over-Voltage Lockout Threshold
Hysteresis
Rising Edge
V_{OVP_RANGE}
Over-Voltage Lockout Threshold
Adjustable Range
T_{RESP_OV}
T_{OVP_REC}
Over-Voltage Response Time
V_OVP rise to 1.13V from 1.07V in 1ns
Recovery Time From Input Over-Voltage
Release
V_OVP fall to 1.07V from 1.13V in 1ns
Input OVP – Fixed (AAT4685-2 and AAT4685-3) ( Measured at IN pin )
V_OVPT
Overvoltage Protection AAT4685-2
Trip Voltage
AAT4685-3
Rising Edge
V_{OVP_HYS}
Over-Voltage Protection Trip Point
Hysteresis
T_{RESP_OV}
T_{OVP_REC}
Over-Voltage Response Time
V_IN rise to 7.5V from 5V
Recovery Time From Input Over-Voltage
Release
V_IN fall to 5V from 7.5V
Input OCP
I_OCP
Over-Current Range (Programmable)
I_OCP/I_OCP Over-Current Trip Tolerance
Rising Edge. R_OCP = 30k
T_{OCP_BL}
Blanking Time, Input Over-Current
Detected
T_{OCP_REC}
Recovery Time From Input Over-Current
Condition
Battery OVP ( Measured at BOVP pin )
V_BOVPT
Battery Over-Voltage Protection Trip
Voltage
Rising Edge
V_{BOVP_HYS}
Battery Over-Voltage Protection Trip
Point Hysteresis
I_BOVP
T_{BOVP_BL}
Battery OVP Pin Input Current
Battery OVP Pin Blanking Time
Min
3
2.5
0.97
4
6.60
5.71
0.3
0.9
4.2
Typ
600
100
2.7
0.1
8
1.0
20
8
6.80
5.85
60
8
1.0
180
64
Max Units
28
V
800 μA
150 μA
2.9
V
V
ms
1.03
V
mV
7
V
1.0
μs
ms
7.0
V
6.0
V
mV
1.0
μs
ms
1.8
A
1.1
A
μs
ms
4.35
275
180
4.5
V
mV
100 nA
μs
1. The AAT4685 is guaranteed to meet performance specification over the -40 to 85°C operating temperature range and are assured by design, characterization and correlation
with statistical process controls.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
4
201960A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 16, 2012