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PDF UB6054 Data sheet ( Hoja de datos )
| Número de pieza | UB6054 | |
| Descripción | ONE-CELL STANDALONE LINEAR LITHIUM BATTERY CHARGER | |
| Fabricantes | Unisonic Technologies | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de UB6054 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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UNISONIC TECHNOLOGIES CO., LTD
UB6054
Preliminary
ONE-CELL STANDALONE
LINEAR LITHIUM BATTERY
CHARGER
CMOS IC
DESCRIPTION
UTC UB6054 is a complete, constant current and constant voltage
linear charger for single cell lithium-ion batteries. Its small size and
ability to regulate low charge currents make UTC UB6054 especially
well-suited for portable applications using low capacity rechargeable
lithium-ion coin cells. Furthermore, UTC UB6054 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. The charge
voltage is fixed at 4.2V, and the charge current can be programmed
externally with a single resistor. UTC UB6054 automatically
terminates a charge cycle when the charge current drops to 1/10th
the programmed value after the final float voltage is reached.
FEATURES
* Programmable Charge Current Up to 500mA.
* No External MOSFET, Sense Resistor or Blocking Diode Required.
* Complete linear charger in ThinSOT Package for Single Cell / Coin
Cell Lithium-lon Batteries.
* Constant Current / Constant Voltage Operation with Thermal
Regulation to Maximize Charge Rate Without Risk of Overheating.
* Charges Single Cell Li-lon Batteries Directly form USB Port.
* Preset 4.2V Charge Voltage with High Accuracy about ±1.2%.
* Automatic Recharge.
* 2.9V Trickle Charge Threshold.
* 20µA Supply Current in Shutdown Mode.
* Available in a SOT-25 Pacakage.
* Charge Status Output Pin.
ORDERING INFORMATION
Note:
Ordering Number
Lead Free
Halogen Free
UB6054L-AF5-R
UB6054G-AF5-R
xx: Output Voltage, refer to Marking Information.
Package
SOT-25
UB6054G-xx-AF5-R
(1)Packing Type
(2)Package Type
(3)Output Voltage Code
(4)Halogen Free
(1) R: Tape Reel
(2) AF5: SOT-25
(3) xx: Refer to Marking Information
(4) G: Halogen Free, L: Lead Free
Packing
Tape Reel
www.unisonic.com.tw
Copyright © 2012 Unisonic Technologies Co., Ltd
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1 page  
UB6054
Preliminary
CMOS IC
ELECTRICAL CHARACTERISTICS (VCC=5V, TA=25°С, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
Input Supply Voltage
VCC
Charge Mode (Note 1),
RPROG=10k
4.5 6.0 V
300 2000 μA
Input Supply Current
Standby Mode (Charge
ICC Terminated)
200 500 μA
Regulated Output (Float) Voltage
VFLOAT
Shutdown Mode(RPROG Not
Connected, VCC<VBAT, or
VCC<VUV)
IBAT=30mA, ICHRG=5mA
25 60
4.15 4.20 4.25
μA
V
RPROG=10k, Current Mode
80 100 120 mA
BAT Pin Current
RPROG=2k, Current Mode
IBAT
Standby Mode, VBAT=4.2V
Shutdown Mode (RPROG Not
Connected)
500 mA
±1 ±6 μA
±1 ±6 μA
Trickle Charge Current
ITRIKL
Sleep Mode, VCC=0V
VBAT<VTRIKL, RPROG=10k
±1 ±6 μA
10 mA
Trickle Charge Threshold Voltage
VTRIKL RPROG=10k, VBAT Rising
2.8 2.9 3.0
V
VCC Undervoltage Lockout Threshold
VCC Undervoltage Lockout Hysteresis
VUV From VCC Low to High
VUVHYS
3.8 V
120 mV
Manual Shutdown Threshold Voltage
VMSD
PROG Pin Rising
PROG Pin Falling
1.25 V
1.15 V
VCC–VBAT Lockout Threshold Voltage
VASD
VCC from Low to High
VCC from High to Low
100 mV
30 mV
C/10 Termination Current Threshold
ITERM
RPROG=10k (Note2)
RPROG=2k
0.1 mA/mA
0.1 mA/mA
PROG Pin Voltage
VPROG RPROG=10k, Current Mode
0.8 1.0 1.2
V
CHRG Pin Weak Pull-Down Current
CHRG Pin Output Low Voltage
ICHRG
VCHRG
VCHRG=3V
ICHRG=5mA
20 μA
0.6 V
Recharge Battery Threshold Voltage ΔVRECHRG VFLOAT-VRECHRG
150 mV
Thermal Protection Temperature
Power FET “ON” Resistance (Between
VCC and BAT)
TLIM
RON
120 °С
0.6 Ω
Soft-Start Time
tSS IBAT=0 to 1000V/RPROG
100 μs
Recharge Comparator Filter Time
Termination Comparator Filter Time
tRECHARGE VBAT High to Low
tTERM
1.0
1000
ms
μs
PROG Pin Pull-Up Current
IPROG
1.0 μA
Notes: 1. Supply current includes PROG pin current (approximately 100μA) but does not include any current
delivered to the battery through the BAT pin (approximately 100mA).
2. ITERM is expressed as a fraction of measured full charge current with indicated PROG resistor.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 13
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UB6054
Preliminary
CMOS IC
APPLICATION INFORMATION(Cont.)
Reverse Polarity Input Voltage Protection
In some applications, protection from reverse polarity voltage on VCC is desired. If the supply voltage is high
enough, a series blocking diode can be used. In other cases, where the voltage drop must be kept low a Pchannel
MOSFET can be used.
Fig4. Low Loss Input Reverse Polarity Protection
USB and Wall Adapter Power
The UTC UB6054 allows charging from both a wall adapter and a USB port. Figure 5 shows an example of how to
combine wall adapter and USB power inputs. A P-channel MOSFET, MP1, is used to prevent back conducting into
the USB port when a wall adapter is present and a Schottky diode, D1, is used to prevent USB power loss through
the 1kΩ pull-down resistor. Typically a wall adapter can supply more current than the 500mA-limited USB port.
Therefore, an N-channel MOSFET, MN1, and an extra 10kΩ program resistor are used to increase the charge
current to 600mA when the wall adapter is present.
Fig5. Combining Wall Adapter and USB Power
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
11 of 13
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