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參數(shù)資料
| 型號： | PSC1534-4.1 |
| 廠商： | LSI CORP |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6 |
| 封裝： | PLASTIC, SOT-23, 6 PIN |
| 文件頁數(shù)： | 3/8頁 |
| 文件大小： | 1384K |
| 代理商： | PSC1534-4.1 |
Agere Systems Inc.
3
Preliminary Data Sheet
April 2003
PSC1534 Lithium-Ion Linear Battery Charger
Pin Information
Figure 4. S6 Package, 6-Lead Plastic, 1 mm Thick, SOT-23
Table 1. Pin Descriptions
Pin Number
Signal Name
Type
Description
1ISENSE
Output
Charging current sense node. Supplies a monitored and controlled
current from VCC to the PNP emitter.
2
GND
Ground reference for all internal circuits. Kelvin connects battery
ground to GND to minimize battery top-off voltage error.
3VCC
Supply
Positive input supply for all internal circuits and external charging
current (PNP emitter). The internal charging current control loop
monitors and controls the current flow between VCC and ISENSE.
Bypass this pin to GND with a 1
F to 10 F tantalum capacitor.
4
PROG
I/O
Charge current programming pin. Use an external resistor, RPROG,
to set current-mode charging current. ICHRG = 1.5 V/RPROG. If the
voltage on PROG exceeds 2.15 V, the PSC1534 enters manual
shutdown mode. This pin can be monitored by an external A/D con-
verter.
5
BAT
I/O
Battery voltage sense input. Bypass this pin with a 10
F tantalum
capacitor close to BAT and GND.
6
DRIVE
Output
Output base driver for PNP transistor. This driver output is current
limited and monitored by an internal thermal shutdown circuit that
will disable the driver if high-current fault conditions occur.
TJMAX = 125 C,
θJA = 230 C/W
TOP VIEW
6 DRIVE
5 BAT
4 PROG
ISENSE 1
GND 2
VCC 3
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