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参数资料
| 型号： | LTC4012IUF-3#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/28页 |
| 文件大小： | 0K |
| 描述： | IC CTLR BATT CHARGER CC/CV 20QFN |
| 标准包装： | 2,500 |
| 功能： | 充电管理 |
| 电池化学： | 多化学 |
| 电源电压： | 6 V ~ 28 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-WFQFN 裸露焊盘 |
| 供应商设备封装： | 20-QFN 裸露焊盘（4x4） |
| 包装： | 带卷 (TR) |
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LTC4012-3
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25°C. DCIN = 20V, BAT = 12V, GND = 0V unless otherwise noted. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Charge Voltage Regulation
V TOL
I VFB
V BAT Accuracy (See Test Circuits)
V FB Input Bias Current
C-Grade
I-Grade
V FB = 1.2V
l
l
–0.5
–0.8
–1.0
±20
0.5
0.8
1.0
%
%
%
nA
R ON
FBDIV On Resistance
I LOAD = 100μA
l
85
190
Ω
I LEAK-FBDIV
V BOV
FBDIV Output Leakage Current
V FB Overvoltage Threshold
SHDN = 0V, FBDIV = 0V
l
l
–1
1.235
0
1.281
1
1.32
μA
V
Charge Current Regulation
I TOL
Charge Current Accuracy with R IN = 3.01k,
6V < BAT < 18V
R PROG = 26.7k
C-Grade
I-Grade
V SENSE = 0mV, PROG = 1.2V
l
l
–4
–5
–9.5
–12.75
–11.67
4
5
9.5
–10.95
%
%
%
μA
A I
Current Sense Amplifier Gain (PROG ?I) with
R IN = 3.01k, 6V < BAT < 18V
V SENSE Step from 0mV to 5mV,
PROG = 1.2V
–1.78
–1.66
–1.54
μA
V CS-MAX
V C10
V REV
Maximum Peak Current Sense Threshold Voltage
per Cycle (R IN = 3.01k)
C/10 Indicator Threshold Voltage
Reverse Current Threshold Voltage
ITH = 2V, C-Grade
ITH = 2V, I-Grade
ITH = 5V
PROG Falling
PROG Falling
l
l
l
140
125
340
180
195
325
400
253
250
265
430
460
295
mV
mV
mV
mV
mV
Input Current Regulation
V CL
Current Limit Threshold
CLP – CLN
C-Grade
I-Grade
l
l
97
96
92
100
100
103
104
108
mV
mV
mV
I CLN
CLN Input Bias Current
CLN = CLP
±100
nA
V ICL
ICL Indicator Threshold
(CLP – CLN) – V CL
–8
–5
–2
mV
CLP Supply
OVR
Operating Voltage Range
6
28
V
V UVLO
CLP Undervoltage Lockout Threshold
CLP Increasing
l
4.65
4.85
5.25
V
V UV(HYST)
UVLO Threshold Hysteresis
200
mV
I CLPO
CLP Operating Current
CLP = 20V, No Gate Loads
2
3
mA
Shutdown
V IL
V IH
R IN
SHDN Input Voltage Low
SHDN Input Voltage High
SHDN Pull-Down Resistance
l
l
1.4
40
300
mV
V
k Ω
I CLPS
CLP Shutdown Current
CLP = 12V, DCIN = 0V
SHDN = 0V
l
15
350
26
500
μA
μA
I LEAK-BAT
I LEAK-CSN
I LEAK-CSP
I LEAK-SW
BAT Leakage Current
CSN Leakage Current
CSP Leakage Current
SW Leakage Current
SHDN = 0V or DCIN = 0V,
0V ≤ CSP = CSN = BAT ≤ 18V
SHDN = 0V or DCIN = 0V,
0V ≤ CSP = CSN = BAT ≤ 20V
SHDN = 0V or DCIN = 0V,
0V ≤ CSP = CSN = BAT ≤ 20V
SHDN = 0V or DCIN = 0V,
0V ≤ SW ≤ 20V
l
l
l
l
–1.5
–1.5
–1.5
–1
0
0
0
0
1.5
1.5
1.5
2
μA
μA
μA
μA
40123fb
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