LTC4410 Linear Technology, LTC4410 Datasheet

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LTC4410

Manufacturer Part Number
LTC4410
Description
USB Power Manager
Manufacturer
Linear Technology
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LTC4410ES6
Manufacturer:
LT
Quantity:
10 000
Part Number:
LTC4410ES6#TR
Manufacturer:
LINEAR
Quantity:
8 000
FEATURES
TYPICAL APPLICATIO
APPLICATIO S
4.35V TO 5.5V
Cellular Phones
PDAs
Digital Cameras
MP3 Players
Battery Backup Systems
Manages Total Power Between a USB Peripheral
and Battery Charger
Minimal Voltage Drop (100mV at 500mA)
Ultralow Battery Drain: 1µA
Reverse Current Blocking Diode Not Required
Undervoltage Lockout
Very Few External Components
Compatible with Several LTC Linear Battery Chargers
Overtemperature Protected
Dual Battery Charge Priority Management
Low Profile (1mm) SOT-23 Package
FROM
USB
100mA 500mA
USB Powered Battery Charger and Power Manager
0.1µF
4.7µF
OFF ON
1Ω
U
SUSPEND
500mA
100mA
MODE
V
MODE
SHDN
V
TIMER
USB
IN
CC
GND
LTC4410
LTC4053
LTC4410
MODE
PROG
CHP
1
0
1
U
USBP
LTC4053
3.4k
1%
SHDN
V
GND
NTC
BAT
OUT
1
1
0
1M
4.7µF
IRLML6401
4410 TA01
1-CELL
Li-Ion
SYSTEM POWER
SUPPLY
DESCRIPTIO
The LTC
operation of portable USB 1.0 and 2.0 compliant devices
while they are connected to a USB port. As the USB periph-
eral load increases, the LTC4410 proportionally reduces
the battery charge current to keep the total current less
than 500mA or 100mA, depending on the state of the MODE
pin.
The LTC4410 includes a USB present output that drives an
external P-channel MOSFET to disconnect the battery from
the USB peripheral when the USB power is valid. This
allows device operation when connected to the USB port,
even when the battery is deeply discharged.
Other features include reverse current blocking, thermal
shutdown and low quiescent current (80µA in 500mA
MODE) that is compliant with USB Suspend Mode.
The LTC4410 is available in the low profile (1mm) SOT-23
(ThinSOT
ThinSOT is a trademark of Linear Technology Corporation.
, LTC and LT are registered trademarks of Linear Technology Corporation.
®
CHARGER
CURRENT
CURRENT
BATTERY
4410 enables simultaneous battery charging and
TM
) package.
LOAD
USB Power Manager
200mA
440mA
240mA
0mA
0mA
U
System Load Step Response
www.DataSheet4U.com
in ThinSOT
5µs/DIV
LTC4410
sn4410 4410fs
4410 TA02
1

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LTC4410 Summary of contents

Page 1

... Other features include reverse current blocking, thermal shutdown and low quiescent current (80µA in 500mA MODE) that is compliant with USB Suspend Mode. The LTC4410 is available in the low profile (1mm) SOT-23 TM (ThinSOT , LTC and LT are registered trademarks of Linear Technology Corporation. ...

Page 2

... Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: Current flows out of CHP, voltage at CHP = 0V. Note 3: The LTC4410E is guaranteed to meet performance specifications from 0°C to 70°C. Specifications over the –40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls ...

Page 3

... V (V) IN 4410 G05 I CC 100 100 –60 4410 G07 LTC4410 www.DataSheet4U.com (MODE = 0) REF IN 400 T = 25°C A 350 300 250 200 150 100 ( Temperature DS(ON) 250 200 150 ...

Page 4

... CHP (Pin 5): Charger Program Output. This pin sources a current that is used by the battery charger to control charge current. V (Pin 6): LTC4410 Output. Bypass this pin with a OUT 10µF or larger X5R ceramic capacitor. This capacitor may be omitted if other circuitry connected to V contains a bypass capacitor. When V ...

Page 5

... OPERATIO The LTC4410 manages the total current consumption between a battery charger and a USB portable device system using the LTC4410, a battery charger can be set up to charge at the maximum available current from the USB port without any need to reserve current for the device load ...

Page 6

... U APPLICATIO S I FOR ATIO USB Power Management and Wall Adapter Power With the addition of a few components, the LTC4410 allows for simultaneous device operation and battery charging while connected to USB port or wall adapter. The LTC4410 will proportionally reduce the battery charge current to keep the total current within the current rated for the wall adapter ...

Page 7

... U U APPLICATIO S I FOR ATIO Dual Battery Charging with Priority The LTC4410 can be used to manage two battery chargers, giving one of the chargers (see Figure 2) priority. When BAT1 is being charged, the charge current is flowing through the LTC4410. The LTC4410 is sensing the current and sourcing a current equal to BAT1 charge current/1000 out of CHP ...

Page 8

... LTC4410 PACKAGE DESCRIPTIO 0.62 0.95 MAX REF 3.85 MAX 2.62 REF RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.20 BSC DATUM ‘A’ 0.30 – 0.50 REF NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF PLATING 4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 5. MOLD FLASH SHALL NOT EXCEED 0.254mm 6 ...

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