AM5056.pdf

Imax B3 - Identyfikacja elementu

Prawdopodobnie AM5056, TP4056. Pozdr!


AM5056
Using SOP8 package
1A Linear Li-Ion Battery Charger
Description
The AM5056 is a complete constant current & constant
voltage linear charger for single cell lithium-ion batteries.
Its SOP package and low external component count
make the AM5056 ideally suited for portable applications.
Furthermore, the AM5056 is specifically designed to
work within USB power specifications.
No external sense resistor is needed, and no blocking
diode is required due to the internal MOSFET
architecture. Thermal feedback regulates the charge
current to limit the die temperature during high power
operation or high ambient temperature. The charge
voltage is fixed at 4.2V, and the charge current can be
programmed externally with a single resistor. The
AM5056 automatically terminates the charge cycle when
the charge current drops to 1/10th the programmed value
after the final float voltage is reached.
When the input supply (wall adapter or USB supply) is
removed, the AM5056 automatically enters a low current
state, dropping the battery drain current to less than 2uA.
The AM5056 can be put into shutdown mode, reducing
the supply current to 50uA.
Other features include Battery temperature monitor,
under-voltage lockout, automatic recharge and two status
pins to indicate charge and charge termination.

? No MOSFET, Sense Resistor or Blocking Diode
Required
? Complete Linear Charger in SOP Package for single
Cell Lithium-Ion Batteries
? Constant-Current/Constant-Voltage Operation with
Thermal Regulation to Maximize Charge Rate
Without Risk of Overheating
? Charges Single Cell Li-Ion Batteries Directly from
USB Port
? Preset 4.2V Charge Voltage with ?1% Accuracy
? Charge Current Monitor Output for Gas Gauging
? Automatic Recharge
? Charge state pairs of output, no battery and fault
status display
? C/10 Charge Termination
? 50uA Supply Current in Shutdown
? 2.9V Trickle Charge Threshold
? Soft-Start Limits Inrush Current
? Battery temperature monitoring function
? Available in SOP8-PP Package

Package
? SOP8-PP

Applications

8

? Cellular Telephones, PDAs, MP3 /MP4 Players
? Charging Docks and Cradles
? Bluetooth ?GPS Applications

7

3

6

4

Features

2

5

? Programmable Charge Current Up to 1000mA

Typical Application Circuit

AM5056

TEL:0755-36848411

http://www.sz-xiangshuo.com

FAX:0755-29765461

1

AM5056
Block Diagram

Absolute Maximum Ratings
PARAMETER

SYMBOL

MAXIMUM RATING

UNIT

Input Supply Voltage

Vcc

VSS-0.3~VSS+7

PROG pin Voltage

Vprog

VSS-0.3~Vcc+0.3

BAT pin Voltage

Vbat

Vss-0.3~7

CHAG pin Voltage

Vchrg

VSS-0.3~VSS+7

BAT pin Current

Ibat

1400

mA

PROG pin Current

Iprog

1400

uA

Operating Ambient Temperature

Topa

-40~+85

V

°
C
Storage Temperature
Tstr
-65~+125
Caution: The absolute maximum ratings are rated values exceeding which the product could suffer physical
damage. These values must therefore not be exceeded under any conditions.

TEL:0755-36848411

http://www.sz-xiangshuo.com

FAX:0755-29765461

2

AM5056
Electrical Characteristics
Parameter

Symbol

Input supply voltage

CONDITION

Vcc

MIN

TYP

UNIT

6.5

4.25

MAX

V

Charge mode, RPROG =10K

uA

150

500

uA

50

100

uA

4.158

4.2

4.242

V

RPROG =2k,Current mode

465

500

535

mA

RPROG =1k,Current mode

934

1000

1070

mA

Standby mode,Vbat=4.2V

0

-2.5

-6

uA

Shutdown mode

?1

?2

uA

Sleep mode,Vcc=0V

Icc

2000

Standby mode
Input supply current

350

0.3

?2

uA

Shutdown mode(RPROG not
connected,Vcc & lt; Vbat or
Vcc & lt; Vuv)

Regulated Output Voltage

BAT pin Current

Vfloat

Ibat

0° ? A<=? 5° IBAT = 40mA
C<=T 8 C,

Trickle charge current

Itrikl

Vbat &amp; lt; Vtrikl,Rprog=1k

93

100

107

mA

Trickle charge Threshold Voltage

Vtrikl

RPROG =10K,Vbat Rising

2.8

2.9

3.0

V

Trickle voltage hysteresis voltage

Vtrhys

RPROG =1k

60

80

110

mV

Vuv

From Vcc low to high

3.7

3.8

3.93

V

150

200

300

mV

Vcc from low to high

50

100

140

mV

Vcc from high to low

5

40

50

mV

RPROG=1k

0.1
0.1

0.115
0.115

mA/mA

RPROG=2k

0.085
0.085
0.93

1.0

1.07

V

Vcc Undervoltage lockout
Threshold
Vcc undervoltage lockout
hysteresis
Vcc-Vbat Lockout Threshold
voltage
C/10 Termination Current
Threshold

Vuvhys
Vasd
Iterm

mA/mA

PROG pin Voltage

Vprog

RPROG =1k, Current mode

CHRG pin Output low voltage

Vchrg

Ichrg=5mA

0.35

0.6

V

STDBY pin Output low voltage

Vstdby

Istdby=5mA

0.35

0.6

V

?Vrecg

VFLOAT - VRECHRG

100

200

mV

Recharge Battery threshold
Voltage
CE high voltage

Vce-h

1.2

CE low voltage

Vce-l

.

TEMP pin voltage of the high-end
flip
TEMP pin voltage of the low-end
flip
Limited temperature patterns in
the junction temperature

TEL:0755-36848411

Vtemp-h
Vtemp-l
Tlim

http://www.sz-xiangshuo.com

V

0.6
80

43

V

82

%Vcc

45

%Vcc

145

°C

FAX:0755-29765461

3

AM5056
Typical Performance Characteristics
VFLOAT vs VCC

Vprog vs Vin
4.50

1.04
1.02

4.40
VFLOAT(V)

V p ro g (V )

1.00
0.98
0.96
0.94

RPROG=10K,
VBAT=3.8V

0.92

4.30
4.20
4.10
RPROG=10K
4.00

0.90
3.5

4

4.5

5

5.5

6

6.5

4.0

7

4.5

5.0

Vin(V)

6.0

6.5

7.0

Ibat vs VCC(VBAT=3.8V)

Itrickl vs VCC(VBAT=2.5V)

1200

100

1000

80

800

Ibat(mA)

120

Itrickl(mA)

5.5
VCC(V)

60
40
20

RPROG=1K
RPROG=2K

0
4.0

4.5

5.0

5.5

6.0

6.5

600
400
RPROG=1K
RPROG=2K

200

7.0

0
4.0

VCC(V)

4.5

5.0

5.5

6.0

6.5

7.0

VCC(V)

Ibat vs VBAT

1200

Ibat(mA)

1000
800
600
400
200

VCC=5V,RPROG=2K

0
2.7

2.9

3.1

3.3

3.5

3.7

3.9

4.1

4.3

VBAT(V)

TEL:0755-36848411

http://www.sz-xiangshuo.com

FAX:0755-29765461

4

AM5056

TEL:0755-36848411

http://www.sz-xiangshuo.com

FAX:0755-29765461

5

AM5056

Ordering Information
Part Number
Top Mark
5056
AM5056
XXYY

Package
SOP8-PP

Pin Configuration
8
2

7

3

6

4

5

Pin Assignment
Pin Number
1

TEMP

2

PROG

3

GND

4

VCC

5

BAT

6

STDBY

7

CHRG

8

TEL:0755-36848411

Pin Name

CE

http://www.sz-xiangshuo.com

FAX:0755-29765461

6

AM5056
Pin Function
TEMP (Pin 1): Battery temperature detection input. TEMP pin to receive the battery NTC sensor output. If the TEMP
pin voltage is less than the input voltage is greater than 45% or 80% of the input voltage means the battery temperature
is too low or too high, then the charge has been suspended.
If the TEMP direct access GND, battery temperature detection canceled, the other charged and functioning properly.
PROG (Pin 2): Charge Current Program, Charge Current Monitor and Shutdown Pin. The charge current is
programmed by connecting a 1% resistor, RPROG, to ground. When charging in constant-current mode, this pin servos
to 1V. In all modes, the voltage on this pin can be used to measure the charge current using the following formula:
IBAT = (VPROG/RPROG) o1000
The PROG pin can also be used to shut down the charger. Disconnecting the program resistor from ground allows a 3uA
current to pull the PROG pin high. When it reaches the 1.21V shutdown threshold voltage, the charger enters shutdown
mode, charging stops and the input supply current drops to 50uA. This pin is also clamped to approximately 2.4V.
Driving this pin to voltages beyond the clamp voltage will draw currents as high as 1.5mA. Reconnecting RPROG to
ground will return the charger to normal operation.
GND (Pin 3): Ground.
VCC (Pin 4): Positive Input Supply Voltage. Provides power to the charger, VCC can range from 4.25V to 6.5V and
should be bypassed with at least a 10uF capacitor. When VCC drops to within 30mV of the BAT pin voltage, the
AM5056enters shutdown mode, dropping IBAT to less than 2uA.
BAT (Pin 5): Charge Current Output. Provides charge current to the battery and regulates the final float voltage to
4.2V. An internal precision resistor divider from this pin sets the float voltage which is disconnected in shutdown mode
.
STDBY (Pin 6): The completion of battery charging instructions side. When the battery charge is complete, STDBY
pulled low by internal switches, indicating the completion of charging. In addition, STDBY pin will be in a
high-impedance state.
CHRG (Pin 7): Open-Drain Charge Status Output. When the battery is charging, the CHRG pin is pulled low by an
internal N-channel MOSFET. When the charge cycle is completed, CHRG pin will be in a high-impedance state.
CE (Pin 8): Chip enable input..High input level wouldYB5056 is in normal working condition; low input level so that
-level driver.
AM5056ispr ohibite dcharg in gstat u s. C E pin can b eTT o r C OSlee
LM
vl

TEL:0755-36848411

http://www.sz-xiangshuo.com

FAX:0755-29765461

7

AM5056
Package Information
SOP8-PP

TEL:0755-36848411

http://www.sz-xiangshuo.com

FAX:0755-29765461

8


Pobierz plik - link do postu