LTC4012CUF-3#PBF Linear Technology, LTC4012CUF-3#PBF Datasheet - Page 5

• Manufacturer Part Number: LTC4012CUF-3#PBF
• Description: IC BATT CHRGR MC HI-EFF 20-QFN
• Manufacturer: Linear Technology

Specifications of LTC4012CUF-3#PBF

• Function: Charge Management
• Battery Type: Multi-Chemistry
• Voltage - Supply: 6 V ~ 28 V
• Operating Temperature: 0°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-WFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

(T
Typical perForMance characTerisTics
A
= 25°C unless otherwise noted. L = IHLP-2525 6.8µH)
225
200
175
125
300
275
250
150
100
100
100
75
95
90
85
80
95
90
85
80
0
Efficiency at DCIN = 20V, BAT = 8V
0
Efficiency at DCIN = 20V, BAT = 16V
0
FBDIV Pin R
R
R
SENSE
IN
= 3.01k
EFFICIENCY
0.5
0.5
5
= 33m
EFFICIENCY
CHARGE CURRENT (A)
CHARGE CURRENT (A)
1
1
ON
10
BAT (V)
POWER LOSS
vs Battery Voltage
1.5
1.5
POWER LOSS
15
R
R
CLP = BAT + 3V
(CLP ≥ 6V)
2
2
SENSE
IN
= 3.01k
20
2.5
= 33m
2.5
4012-3 G05
4012-3 G01
4012-3 G03
25
3
3
10000
1000
100
10000
1000
100
–0.02
–0.04
–0.06
–0.08
–0.10
STATE
LOAD
0.10
0.08
0.06
0.04
0.02
100
95
85
80
90
0
5
0
Efficiency at DCIN = 20V, BAT = 12V
V
Battery Load Dump
CLP = 20V
V
12.1V
LTC4012-3 TEST CIRCUIT
FB
R
R
OUT
SENSE
IN
Line Regulation
= 3.01k
0.5
= 12.3V
10
DISCONNECT
= 33m
CHARGE CURRENT (A)
2A
1A
1
TIME (1ms/DIV)
15
CLP (V)
1.5
3A
1A
EFFICIENCY
POWER LOSS
20
2
RECONNECT
25
2.5
LTC4012-3
4012-3 G02
4012-3 G04
4012-3 G06
30
3
10000
100
1000
40123fb