Rainbow Electronics MAX14525 - Manual

General Description
The MAX14525 features a low R ON 35mΩ (typ) load
switch with four unique enable inputs. The MAX14525
is ideal for disconnecting the lithium-ion (Li+) battery
from the loads in portable devices such as cell phones.
The MAX14525 operates from a +2.2V to +5.5V supply
voltage.
The MAX14525 features an extremely low 0.8µA (typ)
quiescent supply current to maximize battery life in
portable devices. It is enabled from four possible
inputs: external charger connection capable of high
voltage up to +28V, travel adapter (TA), on key (ON_K),
factory mode enable (JIG), and switch enable (S_EN).
The S_EN input is internally ANDed with the switched
battery connection (IN).
The MAX14525 is available in a small 8-pin, 2mm x
2mm TDFN package and operates over the -40°C to
+85°C extended temperature range.
Applications
Cell Phones
PDAs
GPS
UMPC Computers
Digital Cameras
Features
♦ Low 35mΩ (typ) R
ON
Load Switch
♦ Ultra Low, 0.8µA (typ) Supply Current
♦ Four Enable Inputs:
TA: +28V (max) Capable
ON_K: Accurate +3V Trigger Enable
JIG: Factory Mode Enable
S_EN: Logically ANDed with IN
♦ Space-Saving 8-Pin, 2mm x 2mm TDFN Package
♦ Controlled Turn-On to Limit dI/dt Pulses Due to
Lead Inductance
MAX14525
Battery Switch with Four Enable Inputs
________________________________________________________________ Maxim Integrated Products 1
MAX14525
*EP
*CONNECT EXPOSED PAD TO GND.
TOP VIEW
GND
TA
IN
IN
5
6
7
8
4
3
2
1
S_EN
ON_K
JIG
BAT
TDFN-EP
2mm x 2mm
+
Pin Configuration
MAX14525
3.0V
2V
P
ON
BUTTON
SLEW RATE
CONTROL
CHARGER
AC
ADAPTER
PHONE
LOADS
Li-ION
BATTERY
S_EN
JIG
ON_K
BAT IN
TA
GND
Typical Application Circuit
19-4356; Rev 0; 10/08
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Ordering Information
PART PIN-PACKAGE TOP MARK
M AX 14525E TA+ T 8 TDFN-EP* ACQ
Note: The device is specified over the -40°C to +85°C operating
temperature range.
+
Denotes a lead-free/RoHS-compliant package.
* EP = Exposed pad.