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参数资料
| 型号： | LTC4001EUF#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 2/20页 |
| 文件大小： | 0K |
| 描述： | IC CHARGER LI-ION BUCK 16-QFN |
| 标准包装： | 2,500 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion） |
| 电源电压： | 4 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WQFN 裸露焊盘 |
| 供应商设备封装： | 16-QFN（4x4） |
| 包装： | 带卷 (TR) |
LTC4001
ABSOLUTE
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
(Note 1)
PV IN , V INSENSE
t < 1ms, DC < 1% .................................... –0.3V to 7V
Steady State ............................................ –0.3V to 6V
SW, SENSE, BAT, BATSENS, SS, FAULT, CHRG, EN,
TOP VIEW
16 15 14 13
NTC, PROG, IDET, TIMER Voltage .............. – 0.3V to 6V
Operating Temperature Range (Note 3) .. – 40 ° C to 85 ° C
Operating Junction Temperature
(Note 5) ............................................... – 40 ° C to 125 ° C
Storage Temperature Range ................ – 65 ° C to 125 ° C
BAT 1
SENSE 2
PGND 3
GNDSENS 4
5
6
17
7
8
12 PROG
11 NTC
10 FAULT
9 V INSENSE
UF PACKAGE
16-LEAD (4mm × 4mm) PLASTIC QFN
T JMAX = 125 ° C, θ JA = 37 ° C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
ORDER PART NUMBER
LTC4001EUF
UF PART MARKING
4001
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are T A = 25 ° C.
V IN = 5V, V EN = 0V, R PROG = 549 ? , R IDET = 549 ? , unless otherwise specified.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V IN
I IN
Supply Voltage
(Note 2)
PV IN Connected to V INSENSE , PROG and IDET
4
5.5
2
V
mA
Pins Open, Charger On
Shutdown, EN = V IN
50
μ A
V FLOAT
V BAT Regulated Float Voltage
Measured from BATSENS to GNDSENS
●
4.158
4.2
4.242
V
4.179
4.2
4.221
V
I BAT
I TRIKL
V TRIKL
V UVL
Current Mode Charge Current
Trickle Charge Current
Trickle Charge Threshold
V IN Undervoltage Lockout Voltage
R PROG = 549 ? , V BAT = 3.5V
R PROG = 1.10k, V BAT = 3.5V
Shutdown, EN = V IN
V BAT = 2V
V BAT Rising
V BAT Falling
V IN Rising, Measured from V INSENSE to GNDSENS
1.8
0.9
35
3.05
2.85
2.7
2
1
50
3.1
3.0
2.2
1.1
± 5
65
3.20
3.05
2.82
A
A
μ A
mA
V
V
V
? V UVL
V IN Undervoltage Lockout Hysteresis Measured from V INSENSE to GNDSENS
100
mV
V ASD
f OSC
Automatic Shutdown Threshold
Voltage
Oscillator Frequency
V INSENSE – V BATSENS Rising (Turn-On), V BATSENSE = 4V
V INSENSE – V BATSENS Falling (Turn-Off), V BATSENSE = 4V
200
15
1.3
250
30
1.5
300
60
1.7
mV
mV
MHz
D
Maximum Duty Factor
100
%
R PFET
R NFET
R DS(ON) of P-Channel MOSFET
R DS(ON) of N-Channel MOSFET
Measured from PV IN to SW
Measured from SW to PGND
127
121
m ?
m ?
4001f
2
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