LTC4012-2 Linear Technology Corporation, LTC4012-2 Datasheet - Page 3

• Manufacturer Part Number: LTC4012-2
• Description: Multi-Chemistry Battery Charger
• Manufacturer: Linear Technology Corporation

www.DataSheet4U.com
ELECTRICAL CHARACTERISTICS
SYMBOL
Charge Voltage Regulation
V
I
R
I
V
Charge Current Regulation
I
A
V
V
V
Input Current Regulation
V
I
V
CLP Supply
OVR
V
V
I
Shutdown
V
V
V
V
R
I
I
I
temperature range, otherwise specifi cations are at T
VFB
LEAK-FBDIV
TOL
CLN
CLPO
CLPS
LEAK-BAT
LEAK-CSN
TOL
BOV
I
CS-MAX
C10
REV
CL
ICL
UVLO
UV(HYST)
ACP
ACP(HYST)
IL
IH
ON
IN
PARAMETER
V
V
FBDIV On Resistance
FBDIV Output Leakage Current
V
BAT Overvoltage Threshold
Charge Current Accuracy with R
6V < BAT < 18V (LTC4012)
6V < BAT < 15V (LTC4012-1, LTC4012-2)
Current Sense Amplifi er Gain (PROG ΔI) with
R
6V < BAT < 15V (LTC4012-1, LTC4012-2)
Maximum Peak Current Sense Threshold Voltage
per Cycle (R
C/10 Indicator Threshold Voltage
Reverse Current Threshold Voltage
Current Limit Threshold
CLN Input Bias Current
ICL Indicator Threshold
Operating Voltage Range
CLP Undervoltage Lockout Threshold
UVLO Threshold Hysteresis
CLP Operating Current
AC Present Threshold Voltage
ACP Threshold Hysteresis Voltage
SHDN Input Voltage Low
SHDN Input Voltage High
SHDN Pull-Down Resistance
CLP Shutdown Current
BAT Leakage Current
CSN Leakage Current
BAT
FB
FB
IN
= 3.01k, 6V < BAT < 18V (LTC4012)
Input Bias Current
Overvoltage Threshold
Accuracy (See Test Circuits)
IN
= 3.01k)
IN
= 3.01k,
A
= 25°C. DCIN = 20V, BAT = 12V, GND = 0V unless otherwise noted.
The
CONDITIONS
LTC4012
LTC4012-1/LTC4012-2
V
I
SHDN = 0V, FBDIV = 0V
LTC4012
LTC4012-1/LTC4012-2, Relative to
Selected Output Voltage
R
V
V
PROG = 1.2V
ITH = 2V
ITH = 5V
PROG Falling
PROG Falling
CLP – CLN
CLN = CLP
(CLP – CLN) – V
CLP Increasing
CLP = 20V, No Gate Loads
DCIN – BAT, DCIN Rising
CLP = 12V, DCIN = 0V
SHDN = 0V
SHDN = 0V or DCIN = 0V,
0V ≤ CSP = CSN = BAT ≤ 18V
SHDN = 0V or DCIN = 0V,
0V ≤ CSP = CSN = BAT ≤ 20V
LOAD
FB
SENSE
SENSE
PROG
l
= 1.2V
denotes the specifi cations which apply over the full operating
= 100μA
= 26.7k
= 0mV, PROG = 1.2V
Step from 0mV to 5mV,
CL
LTC4012-1/LTC4012-2
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
–12.75
1.235
–1.78
–0.5
–0.8
–0.6
–0.8
4.65
MIN
103
140
340
180
350
1.4
–1
–4
–5
97
96
–8
–1
–1
6
–11.67
1.281
–1.66
±100
4.85
TYP
±20
106
195
325
400
253
100
100
200
500
200
350
85
–5
40
15
0
2
0
0
LTC4012/
–10.95
–1.54
MAX
1.32
5.25
190
109
250
430
460
295
103
104
650
300
500
0.5
0.8
0.6
0.8
–2
28
25
1
4
5
3
1
1
UNITS
3
4012f
mV
mV
mV
mV
mV
mV
mV
mV
mA
mV
mV
mV
kΩ
nA
μA
μA
μA
nA
μA
μA
μA
μA
%
%
%
%
%
%
%
Ω
V
V
V
V