LTC3441 Linear Technology, LTC3441 Datasheet - Page 24

• Manufacturer Part Number: LTC3441
• Description: Dual DC/DC Converter with USB Power Manager and Li-Ion Battery Charger
• Manufacturer: Linear Technology

RELATED PARTS
PART NUMBER
LT1616
LTC1879
LTC3405/LTC3405A
LTC3406/LTC3406B
LTC3407
LTC3412
LTC3414
LTC3440/LTC3441
LTC3455
TYPICAL APPLICATIO
24
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone]
WALL 5V
REMOVE THESE
COMPONENTS IF
WALL ADAPTER
IS NOT USED
DESCRIPTION
500mA (I
DC/DC Converter
1.2A (I
DC/DC Converter
300mA (I
DC/DC Converter
600mA (I
DC/DC Converter
Dual 600mA (I
DC/DC Converter
2.5A (I
DC/DC Converter
4A (I
DC/DC Converter
600mA/1A (I
DC/DC Converter
USB 5V
4.7 F
1 F
3.3V TO 4.2V
C7
CELL Li-ION
OUT
C6
1
1
OUT
OUT
SINGLE
), 4MHz, Synchronous Step-Down
OUT
OUT
OUT
), 550kHz, Synchronous Step-Down
), 4MHz, Synchronous Step-Down
OUT
), 1.4MHz, High Efficiency Step-Down
), 1.5MHz, Synchronous Step-Down
), 1.5MHz, Synchronous Step-Down
OUT
+
), 2MHz/1MHz, Synchronous Buck-Boost
CONTROLLER
), 1.5MHz, Synchronous Step-Down
3.32k
1.24k
U
D1
USB
V
1.8V
LBO
BAT
10 F
2.49M
806k
www.linear.com
C5
C8, 0.1 F
4.7 F
C4
1M
1k
2.49k
10
11
17
16
8
6
5
4
3
2
9
C1 TO C8: X5R OR X7R CERAMIC
L1, L2: TOKO DB318C
D1: ON SEMI MBRM110E
ALL RESISTORS 1%
USB
SUSPEND
USBHP
V
CHRG
WALLFB
TIMER
PROG
V
AO
AI
MAX
BAT
LTC3455
COMMENTS
90% Efficiency, V
I
95% Efficiency, V
I
95% Efficiency, V
I
96% Efficiency, V
I
96% Efficiency, V
I
95% Efficiency, V
I
95% Efficiency, V
I
95% Efficiency, V
I
SD
SD
SD
SD
SD
SD
SD
SD
PWRON
PBSTAT
MODE
HSON
<1 A, ThinSOT
<1 A, TSSOP16
<1 A, ThinSOT
<1 A, ThinSOT
<1 A, MS10E
<1 A, TSSOP16E
<1 A, TSSOP16E
<1 A, MS/DFN
SW2
SW1
GND
HSO
ON2
RST
3455 TA03
FB2
FB1
HSI
ON
21
15
19
22
20
23
24
14
13
12
18
7
1
25
L2, 4.7 H
L1, 4.7 H
1M
IN
IN
IN
IN
IN
IN
IN
IN
10pF
10pF
: 3.6V to 25V, V
: 2.7V to 10V, V
: 2.7V to 6V, V
: 2.5V to 5.5V, V
: 2.5V to 5.5V, V
: 2.5V to 5.5V, V
: 2.25V to 5.5V, V
: 2.5V to 5.5V, V
1M
ON/OFF
C
C3
1 F
1.8V
3.3V, HS
LINEAR TECHNOLOGY CORPORATION 2004
249k
80.6k
100k
80.6k
OUT(MIN)
OUT(MIN)
OUT(MIN)
OUT(MIN)
OUT(MIN)
OUT(MIN)
OUT(MIN)
OUT(MIN)
LT/TP 0304 1K • PRINTED IN USA
= 0.8V, I
C2
10 F
C1
10 F
= 1.25V, I
= 0.8V, I
3.3V
0.5A
1.8V
0.4A
= 0.6V, I
= 0.6V, I
= 0.8V, I
= 2.5V, I
= 0.8V, I
Q
Q
= 20 A,
Q
Q
Q
Q
Q
= 15 A,
Q
= 20 A,
= 40 A,
= 60 A,
= 25 A/50 A,
= 1.9mA,
= 64 A,
3455f