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參數(shù)資料
| 型號： | PSC1534-4.1 |
| 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)： | 6/8頁 |
| 文件大小： | 1384K |
| 代理商： | PSC1534-4.1 |
6
Agere Systems Inc.
Preliminary Data Sheet
April 2003
PSC1534 Lithium-Ion Linear Battery Charger
Electrical Characteristics (continued)
When operating near minimum VCC, a low Vce-sat PNP transistor is required.
External PNP pass transistor has negligible Ib-c when the Vb-c = 0.8 V (VCC – VBAT = 5.0—4.2 = 0.8 V).
§ External PNP pass transistor has negligible Ib-e when the Vb-e = 4.2 V (VBAT – VCC = 4.2—0 = 4.2 V).
Typical Performance Characteristics
Figure 5. Float Voltage vs. Temperature
Figure 6. VFLOAT vs. IBAT (RPROG = 2 k
)
Table 2. Electrical Characteristics (continued)
Parameter
Conditions
Min
Typ
Max
Unit
Automatic Trickle Charging
Trickle Charge Battery Voltage Entry Threshold
VBAT decreasing
2.32
2.42
2.52
V
Trickle Charge Battery Voltage Exit Threshold
VBAT increasing
2.42
2.52
2.62
V
Trickle Charge Battery Voltage Hysteresis
—
100
—
mV
Trickle Charge—Charge Current
RPROG = 3000
,
4.55 V
≤ VCC ≤ 5.5 V,
pass PNP beta > 50
10
50
90
mA
Charger Manual Control
Manual Shutdown Threshold
VPROG increasing
2.05
2.15
2.25
V
Manual Shutdown Hysteresis
VPROG decreasing from VMSDT
—90
—
mV
Programming Pin Pull-up Current
VPROG = 2.5 V
–6
–3
–1.5
A
Protection
Drive Output Short-circuit Current Limit
VDRIVE = VCC
35
65
130
mA
4.180
4.190
4.200
4.210
4.220
-50
-25
0
255075
100
125
V
float
(V
CC
=5V, I
BAT
=10 mA, PNP=FCX717)
V
Fl
o
a
t
Temperature (C)
4.195
4.197
4.200
4.202
4.205
0
100
200
300
400
500
600
700
V
FLO
A
T
(V
)
I
BAT
(mA)
V
cc
=5V
T
A
=25C
PNP=FCX717
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