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LTC4012-3 Datasheet(PDF) 3 Page - Linear Technology

Part # LTC4012-3
Description  High Efficiency, Multi-Chemistry Battery Charger with PowerPath Control
Download  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4012-3 Datasheet(HTML) 3 Page - Linear Technology

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40123fb
LTC4012-3
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Charge Voltage Regulation
VTOL
VBAT Accuracy (See Test Circuits)
C-Grade
I-Grade
l
l
–0.5
–0.8
–1.0
0.5
0.8
1.0
%
%
%
IVFB
VFB Input Bias Current
VFB = 1.2V
±20
nA
RON
FBDIV On Resistance
ILOAD = 100µA
l
85
190
Ω
ILEAK-FBDIV FBDIV Output Leakage Current
SHDN = 0V, FBDIV = 0V
l
–1
0
1
µA
VBOV
VFB Overvoltage Threshold
l
1.235
1.281
1.32
V
Charge Current Regulation
ITOL
Charge Current Accuracy with RIN = 3.01k,
6V < BAT < 18V
RPROG = 26.7k
C-Grade
I-Grade
l
l
–4
–5
–9.5
4
5
9.5
%
%
%
VSENSE = 0mV, PROG = 1.2V
–12.75
–11.67
–10.95
µA
AI
Current Sense Amplifier Gain (PROG ∆I) with
RIN = 3.01k, 6V < BAT < 18V
VSENSE Step from 0mV to 5mV,
PROG = 1.2V
–1.78
–1.66
–1.54
µA
VCS-MAX
Maximum Peak Current Sense Threshold Voltage
per Cycle (RIN = 3.01k)
ITH = 2V, C-Grade
ITH = 2V, I-Grade
ITH = 5V
l
l
l
140
125
195
325
250
265
430
mV
mV
mV
VC10
C/10 Indicator Threshold Voltage
PROG Falling
340
400
460
mV
VREV
Reverse Current Threshold Voltage
PROG Falling
180
253
295
mV
Input Current Regulation
VCL
Current Limit Threshold
CLP – CLN
C-Grade
I-Grade
l
l
97
96
92
100
100
103
104
108
mV
mV
mV
ICLN
CLN Input Bias Current
CLN = CLP
±100
nA
VICL
ICL Indicator Threshold
(CLP – CLN) – VCL
–8
–5
–2
mV
CLP Supply
OVR
Operating Voltage Range
6
28
V
VUVLO
CLP Undervoltage Lockout Threshold
CLP Increasing
l
4.65
4.85
5.25
V
VUV(HYST)
UVLO Threshold Hysteresis
200
mV
ICLPO
CLP Operating Current
CLP = 20V, No Gate Loads
2
3
mA
Shutdown
VIL
SHDN Input Voltage Low
l
300
mV
VIH
SHDN Input Voltage High
l
1.4
V
RIN
SHDN Pull-Down Resistance
40
k
Ω
ICLPS
CLP Shutdown Current
CLP = 12V, DCIN = 0V
SHDN = 0V
l
15
350
26
500
µA
µA
ILEAK-BAT
BAT Leakage Current
SHDN = 0V or DCIN = 0V,
0V ≤ CSP = CSN = BAT ≤ 18V
l
–1.5
0
1.5
µA
ILEAK-CSN
CSN Leakage Current
SHDN = 0V or DCIN = 0V,
0V ≤ CSP = CSN = BAT ≤ 20V
l
–1.5
0
1.5
µA
ILEAK-CSP
CSP Leakage Current
SHDN = 0V or DCIN = 0V,
0V ≤ CSP = CSN = BAT ≤ 20V
l
–1.5
0
1.5
µA
ILEAK-SW
SW Leakage Current
SHDN = 0V or DCIN = 0V,
0V ≤ SW ≤ 20V
l
–1
0
2
µA
elecTrical characTerisTics The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. DCIN = 20V, BAT = 12V, GND = 0V unless otherwise noted. (Note 2)


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