LTC3868IUH#TRPBF Linear Technology, LTC3868IUH#TRPBF Datasheet - Page 38

• Manufacturer Part Number: LTC3868IUH#TRPBF
• Description: IC CTRLR STP-DN SYNC DUAL 32QFN
• Manufacturer: Linear Technology
• Series: PolyPhase®r
• Type: Step-Down (Buck)r

Specifications of LTC3868IUH#TRPBF

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.8 ~ 14 V
• Frequency - Switching: 50kHz ~ 900kHz
• Voltage - Input: 4 ~ 24 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Power - Output: -

LTC3868
TYPICAL APPLICATION
RELATED PARTS
PART NUMBER
LTC3859
LTC3857/LTC3857-1
LTC3858/LTC3858-1
LTC3890/LTC3890-1
LTC3834/LTC3834-1
LTC3835/LTC3835-1
LT3845A
LTC3824
38
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
C
ITH1A
49.9k
R
C
A1
ITH1
DESCRIPTION
Low I
Synchronous DC/DC Controller
Low I
Down DC/DC Controllers with 99% Duty Cycle
Low I
Down DC/DC Controllers with 99% Duty Cycle
60V, Low I
Down DC/DC Controllers with 99% Duty Cycle
Low I
Controllers
Low I
Controllers
Low I
DC/DC Controller
Low I
Duty Cycle
68pF
3300pF
●
698k
10pF
R
C
FAX: [phone]
Q
Q
Q
Q
Q
Q
Q
B1
F1
R
, Triple Output Buck/Buck/Boost
, Dual Output 2-Phase Synchronous Step-
, Dual Output 2-Phase Synchronous Step-
, Synchronous Step-Down DC/DC
, Synchronous Step-Down DC/DC
, High Voltage Synchronous Step-Down
, High Voltage DC/DC Controller, 100%
ITH1
Q
C
1nF
1nF
2.94k
SS1
, Dual 2-Phase Synchronous Step-
C1
C2
V
V
OUT
I
SS1
0.1μF
TH1
FB1
High Effi ciency 2-Phase 12V/150W Step-Down Converter
SENSE1
SENSE1
V
I
SS1
I
PHASMD
CLKOUT
PLLIN/MODE
SGND
EXTV
RUN1
RUN2
FREQ
SS2
I
V
SENSE2
SENSE2
TH1
LIM
TH2
FB1
FB2
●
CC
www.linear.com
LTC3868
+
–
–
+
PGOOD2
PGOOD1
BOOST1
BOOST2
INTV
PGND
SW1
SW2
BG1
TG1
BG2
TG2
V
CC
IN
C
L1, L2: SUMIDA CDEP106-6ROM
MTOP1, MTOP2: INFINEON BSZ097N04LS
MBOT1, MBOT2: INFINEON BSZ097N04LS
100k
100k
OUT1
D1
D2
, C
COMMENTS
Outputs (≥5V) Remain in Regulation Through Cold Crank 2.5V ≤ V
V
Phase-Lockable Fixed Operating Frequency 50kHz to 900kHz,
4V ≤ V
Phase-Lockable Fixed Operating Frequency 50kHz to 900kHz,
4V ≤ V
Phase-Lockable Fixed Operating Frequency 50kHz to 900kHz,
4V ≤ V
Phase-Lockable Fixed Operating Frequency 140kHz to 650kHz,
4V ≤ V
Phase-Lockable Fixed Operating Frequency 140kHz to 650kHz,
4V ≤ V
Adjustable Fixed Operating Frequency 100kHz to 500kHz, 4V ≤ V
1.23V ≤ V
Selectable Fixed 200kHz to 600kHz Operating Frequency 4V ≤ V
0.8V ≤ V
OUT2
OUT(BUCKS)
INTV
C
0.47μF
C
0.47μF
B1
B2
: SANYO 16TQC22M
CC
C
4.7μF
IN
IN
IN
IN
IN
INT
OUT
≤ 38V, 0.8V ≤ V
≤ 38V, 0.8V ≤ V
≤ 60V, 0.8V ≤ V
≤ 36V, 0.8V ≤ V
≤ 36V, 0.8V ≤ V
OUT
Up to 24V, V
≤ V
MTOP2
MBOT1
MTOP1
MBOT2
≤ 36V, I
IN
, I
C
10μF
50V
Q
IN
Q
= 40μA, MSOP-10E
6μH
6μH
L1
L2
= 120μA, TSSOP-16
OUT
OUT
OUT
OUT(BOOST)
OUT
OUT
≤ 24V, I
≤ 10V, I
≤ 10V, I
R
R
≤ 24V, I
≤ 24V, I
10μF
50V
SENSE1
5mΩ
SENSE2
5mΩ
V
19V TO 24V
IN
Q
Q
Q
Up to 60V, I
Q
Q
3868 TA06
= 50μA
= 30μA
= 80μA
= 170μA
= 50μA
© LINEAR TECHNOLOGY CORPORA TION 2009
10μF
16V
C
22μF
16V
C
22μF
16V
OUT1
OUT2
Q
LT 1210 REV D • PRINTED IN USA
= 55μA
V
12V
12.5A
10μF
16V
OUT1
IN
IN
IN
≤ 60V,
≤ 60V,
≤ 38V,
3868fd