Datasheet

5
4009fd
LTC4009
LTC4009-1/LTC4009-2
Typical perForMance characTerisTics
Efficiency at DCIN = 20V, BAT = 8V
V
FB
Line Regulation
TesT circuiTs
–
–
–
+
1013 12
1.2085V
1.2085V
TARGET
PROG V
FB
ITH
4009 TC01
LTC4009
0.6V
EA
FROM ICL
(CLP = CLN)
–
+
LTC1055
–
–
–
+
1113 12
1.2085V
TARGET VARIES
WITH FVS0,1
PROG BAT ITH
4009 TC02
LTC4009-1
LTC4009-2
0.6V
EA
FROM ICL
(CLP = CLN)
–
+
LTC1055
CHARGE CURRENT (A)
0
80
EFFICIENCY (%)
POWER LOSS (mW)
85
90
95
100
100
1000
10000
0.5 1.0 1.5 2.0
4009 G01
2.5 3.0
POWER LOSS
EFFICIENCY
R
SENSE
= 33mΩ
R
IN
= 3.01k
Efficiency at DCIN = 20V, BAT = 12V
CHARGE CURRENT (A)
0
80
EFFICIENCY (%)
POWER LOSS (mW)
85
90
95
100
100
1000
10000
0.5 1.0 1.5 2.0
4009 G02
2.5 3.0
POWER LOSS
EFFICIENCY
R
SENSE
= 33mΩ
R
IN
= 3.01k
Efficiency at DCIN = 20V, BAT = 16V
CHARGE CURRENT (A)
0
80
EFFICIENCY (%)
POWER LOSS (mW)
85
90
95
100
100
1000
10000
0.5 1.0 1.5 2.0
4009 G03
2.5 3.0
POWER LOSS
EFFICIENCY
R
SENSE
= 33mΩ
R
IN
= 3.01k
CLP (V)
5
V
FB
ERROR (%)
0.02
0.06
0.10
25
4009 G04
–0.02
–0.06
0
0.04
0.08
–0.04
–0.08
–0.10
10
15
20
30
LTC4009 TEST CIRCUIT
BAT (V)
0
75
R
ON
(Ω)
100
150
175
200
10
20
25
300
4009 G05
125
5 15
225
250
275
CLP = BAT + 3V
(CLP ≥ 6V)
FBDIV R
ON
vs BAT
(T
A
= 25°C unless otherwise noted. D
IN
= SSB44, L = IHLP-2525 6.8µH)