LTC3101 Linear Technology, LTC3101 Datasheet - Page 31

• Manufacturer Part Number: LTC3101
• Description: Multi-Output DC/DC Converter and PowerPath Controller
• Manufacturer: Linear Technology

www.DataSheet4U.com
PACKAGE DESCRIPTION
TYPICAL APPLICATIONS
4.3V TO 5.5V
USB POWER
4.50 0.05
V
OUT1
μP
CELLS
3.10 0.05
2 AA
+
2.45 0.05
(4 SIDES)
Sequenced Start-Up, Buck-Boost Followed by Buck Converters
R1
50k
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
NOTE:
1. DRAWING PROPOSED TO BE MADE A JEDEC PACKAGE OUTLINE MO-220 VARIATION (WGGD-X)—TO BE APPROVED
2. DRAWING NOT TO SCALE
3. ALL DIMENSIONS ARE IN MILLIMETERS
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
5. EXPOSED PAD SHALL BE SOLDER PLATED
6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE, IF PRESENT
ON THE TOP AND BOTTOM OF PACKAGE
0.033μF
ON/OFF
C2
10μF
R2
50k
C1
C3
10μF
BAT1
USB1
USB2
C
PWRKEY
PBSTAT
PWRON
RESET
RS
BAT2 SW3A
LTC3101
GND
4.7μH
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
SW3B OUT3
0.50 BSC
ENA2
ENA3
PWM
ENA1
0.25 0.05
MAX
SW2
SW1
HSO
LDO
FB3
FB2
FB1
0.70 0.05
PACKAGE
OUTLINE
4.7μH
4.7μH
C4
10μF
221k
110k
221k
221k
R6
R7
R8
R9
24-Lead Plastic QFN (4mm × 4mm)
(Reference LTC DWG # 05-08-1697)
R3
1M
R4
221k
C6
4.7μF
C7
4.7μF
3101 TA05a
PIN 1
TOP MARK
(NOTE 6)
C9
22pF
C11
22pF
R5
100k
4.00 0.10
V
300mA FOR V
800mA FOR V
(4 SIDES)
OUT3
UF Package
C8
4.7μF
C5
0.1μF
= 3.3V
C10
10μF
C12
10μF
IN
IN
≥ 1.8V
≥ 3V
Hot Swap OUTPUT
3.3V
100mA
TRACKING OUTPUT
200mA
1.8V
50mA
V
1.8V
350mA
V
1.2V
350mA
OUT2
OUT1
0.75 0.05
PWRKEY 5V/DIV
PBSTAT 2V/DIV
2.45 0.10
(4-SIDES)
RESET 2V/DIV
0.200 REF
0.00 – 0.05
C
VOLTAGES
RS
OUTPUT
1V/DIV
2V/DIV
R = 0.115
BOTTOM VIEW—EXPOSED PAD
TYP
Power-Up Waveforms
V
OUT3
23
10ms/DIV
LTC3101
24
0.50 BSC
0.25 0.05
1
2
(UF24) QFN 0105
0.40 0.10
V
OUT1
V
PIN 1 NOTCH
R = 0.20 TYP
OR 0.35 45
CHAMFER
OUT2
31
3101 TA05b
3101f