pt6112 China Resources Powtech (Shanghai) Co., Ltd, pt6112 Datasheet

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pt6112

Manufacturer Part Number
pt6112
Description
Standalone Linear Li-ion Battery Charger With Thermal Regulation
Manufacturer
China Resources Powtech (Shanghai) Co., Ltd
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
PT6112
Manufacturer:
华润矽威
Quantity:
20 000
Part Number:
pt6112E23E
Manufacturer:
POWTECH
Quantity:
20 000
Part Number:
pt6112E23E
Manufacturer:
POWTECH
Quantity:
8 564
GENERAL DESCRIPTION
The PT6112 is a highly integrated Li-ion battery linear
charging management device targeted at space limited
portable applications. The PT6112 offers an integrated
MOSFET and current sensor, reverse blocking
protection, high accuracy current and voltage regulation,
charge status indication, and charge termination in a
SOT23 or ESOP8 package. The PT6112 has low
external component count. The PT6112 charges a
battery in three phases: trickle charging, constant
current, and constant voltage. No external sense resistor
is needed, and no blocking diode is required due to the
internal MOSFET architecture. The thermal feedback
regulates the charging current to limit the chip
temperature during high power operation or high
ambient temperature to maximize the charge rate
without risk of overheating. The charge voltage is fixed
at 4.2V, and the charge current can be programmed
externally with a single resistor. The PT6112
automatically terminates the charge cycle when the
charge current drops to 1/10 the programmed value
after the final float voltage is reached. The PT6112
automatically re-starts the charge if the battery voltage
falls below an internal threshold.
ORDERING INFORMATION
TYPICAL APPLICATION CIRCUIT
China Resources Powtech (Shanghai) Limited
PT6112_DS Rev EN_1.0
PACKAGE
SOT23-5
ESOP8
TEMPERATURE
-40℃ to 85℃
-40℃ to 85℃
RANGE
ORDERING PART
WWW.CRPOWTECH.COM
PT6112EESO
PT6112E23E
NUMBER
Charger with Thermal Regulation
Standalone Linear Li-Ion Battery
FEATURES
USB Port
Required
Package for Single Cell Lithium-Ion Batteries
Thermal Regulation to Maximize Charge Rate Without
Risk of Overheating
APPLICATIONS
KEY PERFORMANCE CHART
700
600
500
400
300
200
100
0
Charges Single Cell Li-Ion Batteries Directly from
Programmable Charge Current Up to 800mA
No MOSFET, Sense Resistor or Blocking Diode
Complete Linear Charger in SOT23-5 or ESOP8
Constant-Current/Constant-Voltage Operation with
Preset 4.2V Charge Voltage with ±1% Accuracy
Cellular Telephones, PDAs, MP3 Players
Bluetooth Applications
Digital Cameras
Charging Docks and Cradles
0
Constant current
V
R
T
CC
A
PROG
=25?
=5V,
Complete Charging Cycle(900mAh Battery)
20
=1.65K,
40
Time (Minutes)
TRANSFER
Tape & Reel
Tape & Reel
60
MEDIA
Constant voltage
80
PT6112
Charge terminated
100
MARKING
120
xxxxxX
PT6112
6112
Page 1
4.25
4.20
4.15
4.10
4.05
4.00
3.95
3.90
3.85
3.80

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pt6112 Summary of contents

Page 1

... GENERAL DESCRIPTION The PT6112 is a highly integrated Li-ion battery linear charging management device targeted at space limited portable applications. The PT6112 offers an integrated MOSFET and current sensor, reverse blocking protection, high accuracy current and voltage regulation, charge status indication, and charge termination in a SOT23 or ESOP8 package ...

Page 2

... BAT Pin Current Operating Ambient Temperature Range Storage Temperature Range Lead Temperature P TR1 P TR2 China Resources Powtech (Shanghai) Limited PT6112_DS Rev EN_1.0 Standalone Linear Li-Ion Battery Charger with Thermal Regulation PROG 4 VCC Description Open-Drain Charges Status Output. Ground Charge Current Output. The positive side of battery. ...

Page 3

... BAT Threshold Voltage I C/10 Termination Current TERM Threshold V PROG Pin Voltage PROG China Resources Powtech (Shanghai) Limited PT6112_DS Rev EN_1.0 Standalone Linear Li-Ion Battery Charger with Thermal Regulation (Note 2) PARAMETER Input supply voltage (Note 3,4,5) =5V, unless otherwise noted CONDITIONS Charge Mode(Note 6), R PROG ...

Page 4

... Note 6: Supply current includes PROG pin current (approximately 100uA) but does not include any current delivered to the battery through the BAT pin (approximately 100mA). China Resources Powtech (Shanghai) Limited PT6112_DS Rev EN_1.0 Standalone Linear Li-Ion Battery Charger with Thermal Regulation (Note 3,4,5) ...

Page 5

... If the battery operation is terminated, the PT6112 keeps monitoring the BAT voltage. It will recharge the battery as soon as the BAT voltage drops below 4.05V. The PT6112 includes a soft-start circuit to minimize the inrush current at the start of a charge cycle. When the PROG pin is floating, the charger goes into the shutdown mode ...

Page 6

... Rprog is open VCC=5V VBAT=3. -40 - Temperature(℃) China Resources Powtech (Shanghai) Limited PT6112_DS Rev EN_1.0 Standalone Linear Li-Ion Battery Charger with Thermal Regulation Cin: Cout: Charging current VS Temperature Rprog=2K VCC=5V VBAT=3.6V SOT23-5 600 500 400 300 200 100 0 ...

Page 7

... PROG pin voltage VS Supply voltage Rprog=10K VBAT=3.6 TA=25℃ 1.08 1.05 1.02 0.99 0.96 0.93 0.9 4.25 4.5 4.75 Supply voltage(V) Trickle charge current VS Supply voltage Rprog=2K VBAT=3.6 TA=25℃ 4.25 4.5 4.75 Supply voltage(V) China Resources Powtech (Shanghai) Limited PT6112_DS Rev EN_1.0 Standalone Linear Li-Ion Battery Charger with Thermal Regulation 1.05 1.04 1.03 1.02 1.01 1 0.99 0.98 0.97 0.96 0. 4.28 4.25 4.22 4.19 4.16 4.13 4.1 5 5.25 5.5 Charge current VS Supply voltage Rprog=2K VBAT=3.6V TA=25℃ ...

Page 8

... The strong pull down mode indicates the PT6112 charging cycle. A weak pull down mode indicates the Vcc reaches the UVLO and the charger is ready to charge. The high impedance indicates the ...

Page 9

... When using high value, low ESR ceramic capacitors recommended to add a 1Ω resistor in series with the China Resources Powtech (Shanghai) Limited PT6112_DS Rev EN_1.0 Standalone Linear Li-Ion Battery Charger with Thermal Regulation in the power MOSFET, the UVLO circuit keeps the charger in shutdown mode if VCC falls to within 30mV of the battery voltage ...

Page 10

... PACKAGE INFORMATION China Resources Powtech (Shanghai) Limited PT6112_DS Rev EN_1.0 Standalone Linear Li-Ion Battery Charger with Thermal Regulation ESOP8 package WWW.CRPOWTECH.COM PT6112 Page 10 ...

Page 11

... PACKAGE INFORMATION SYMBOL θ θ1 θ2 China Resources Powtech (Shanghai) Limited PT6112_DS Rev EN_1.0 Standalone Linear Li-Ion Battery Charger with Thermal Regulation SOT23-5 MILLIMETERS MIN TYP - - 0 - 1.00 1.10 0.60 0.65 0.36 - 0.36 0.38 0.14 - 0.14 0.15 2.826 2.926 2.60 2.80 1.526 1.626 0.95BSC 1.90BSC ...

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