uP7534
Current-Limited, Power Distribution Switches
General Description
The uP7534 is a current limited high-side switch designed
for applications where heavy capacitive loads and short-
circuits are likely to be met. This device operates with
inputs from 2.7V to 5.5V for both 3V and 5V systems. Its
low quiescent current (25uA) and standby current (<1uA)
conserve battery power in portable.
The power switch is controlled by a logic enable input and
driven by an internal charge pump circuit. When the output
load exceeds the current-limit threshold or a short is
present, the uP7534 asserts overcurrent protection and
limits the output current to a safe level by driving the power
switch into saturation mode.
The uP7534 features glitch-blank fault flag that is asserted
by overcurrent, overtemperature, or input undervoltage
lockout. The 8ms glitch-blanking time allows momentary
faults to be ignored, thus preventing false alarms to the
host system.
Other features include soft-start to limit inrush current
during plug-in, thermal shutdown to prevent catastrophic
switch failure from high-current loads, under-voltage lockout
(UVLO) to ensure that the device remains off unless there
is a valid input voltage present. The uP7534 is available in
SOP-8 , SOT23-5, MSOP-8, and PMSOP-8 packages.
Compliant to USB Specifications
Operating Range: 2.7 V to 5.5 V
Ω
75mΩ (5VIN MSOP) High Side MOSFET Switch
25uA Typical Quiescent Current
<1uA Typical Shutdown Current
Over Current/ Short Circuit Protect
Thermal Shutdown Protection
Deglitched Open Drain Fault Flag
Slow Turn On and Fast Turn Off
Enable Active-High or Active-Low
UL Approved-E316940
TuV EN60950-1 Certification
CB IEC60950-1 Certification
RoHS Compliant and Halogen Free
Features
Applications
Notebook and Desktop PCs
USB Power Management
ACPI Power Distribution
Hot-Plug Power Supplies
Battery-Powered Equipments
Battery-Charger Circuits
Pin Configuration
OC#
1
uP7534C/D
5
VOUT
VOUT
1
uP7534A
5
VOUT VOUT
1
uP7534B
5
VOUT VOUT
1
uP7534E/F
5
VIN
GND
(uP7534C) EN
(uP7534D) EN#
2
GND
2
GND
2
GND
2
3
4
VIN
VIN
3
4
EN
VIN
3
4
VIN
NC
3
4
EN(uP7534E)
EN#(uP7534F)
SOT23-5 (MA5)
SOT23-5 (M5)
SOT23-5 (M5)
SOT23-5 (MA5)
VOUT
1
uP7534G/H
5
VIN
OC#
VOUT
VOUT
1
uP7534A/B
8
7
6
5
SOP-8 (S8)
NC
VIN
VIN
EN (uP7534A)
EN# (uP7534B)
GND
VIN
VIN
(uP7534C) EN
}
(uP7534D) EN#
1
uP7534C/D
8
7
6
5
VOUT
VOUT
VOUT
OC#
2
3
4
2
3
4
GND
2
OC#
3
4
EN(uP7534G)
EN#(uP7534H)
GND
SOT23-5 (MA5)
SOP-8 (SA8)
GND
VIN
VIN
(uP7534A) EN
(uP7534B) EN#
1
2
3
4
8
7
6
5
VOUT
VOUT
VOUT
OC#
GND
VIN
VIN
(uP7534A) EN
(uP7534B) EN#
1
2
3
4
8
7
VOUT
VOUT
VOUT
OC#
GND
6
5
MSOP-8 (RA8)
PMSOP-8 (RU8)
uP7534-DS-F0302, Mar. 2012
www.upi-semi.com
1
UNITPOWER [ Unitpower Technology Limited ]
