LTC3890EGN-1#TRPBF Linear Technology, LTC3890EGN-1#TRPBF Datasheet - Page 36

• Manufacturer Part Number: LTC3890EGN-1#TRPBF
• Description: IC BUCK SYNC ADJ DUAL 28SSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC3890EGN-1#TRPBF

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: 0.8 ~ 24 V
• Frequency - Switching: 350kHz ~ 535kHz
• Voltage - Input: 4 ~ 60 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Power - Output: -

RELATED PARTS
LTC3890-1
TYPICAL APPLICATION
PART NUMBER
LT3891
LTC3857/LTC3857-1/
LTC3858/LTC3858-1
LTC3834/LTC3834-1/
LTC3835/LTC3835-1
LTC3810
LTC3859
36
6.98k
C
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
C
R
ITH2
ITH1
A1
31.6k
R
41.2k
R
FREQ
1000pF
A2
470pF
C
C
C
SS2
ITH1A
SS1
C
100pF
DESCRIPTION
60V, Low I
Low I
DC/DC Controllers with 99% Duty Cycle
Low I
DC/DC Controllers with 99% Duty Cycle
100V Synchronous Step-Down DC/DC Controller
Low I
DC/DC Controller
ITH2A
0.01μF
0.01μF
100pF
100k
●
100k
R
R
R
34.8k
R
34.8k
Q
Q
Q
B2
FAX: [phone]
B1
ITH1
ITH2
, Dual Output 2-Phase Synchronous Step-Down
, Single Output Synchronous Step-Down
, Triple Output Buck/Buck/Boost Synchronous
Q
, Synchronous Step-Down DC/DC Controller
V
OUT1
C1
1nF
C2
1nF
SENSE1
SENSE1
V
ITH1
TRACK/SS1
PLLIN/MODE
SGND
EXTV
RUN1
RUN2
FREQ
TRACK/SS2
ITH2
V
SENSE2
SENSE2
FB1
FB2
High Efficiency Dual 12V/3.3V Step-Down Converter
●
CC
LTC3890-1
www.linear.com
+
–
–
+
PGOOD1
BOOST1
BOOST2
INTV
PGND
SW1
SW2
BG1
TG1
BG2
TG2
V
CC
IN
100k
C
B2
0.47μF
D1
D2
C
0.47μF
B1
INTV
C
4.7μF
CC
INT
COMMENTS
PLL Fixed Frequency 50kHz to 900kHz, 4V ≤ V
0.8V ≤ V
PLL Fixed Frequency 50kHz to 900kHz, 4V ≤ V
0.8V ≤ V
PLL Fixed Frequency 140kHz to 650kHz, 4V ≤ V
0.8V ≤ V
Constant On-Time Valley Current Mode, 4V ≤ V
0.8V ≤ V
Outputs (≥5V) Remain in Regulation Through Cold Crank,
2.5V ≤ V
MBOT1
MTOP1
MTOP2
MBOT2
4.7μH
8μH
L1
L2
OUT
OUT
OUT
OUT
IN
≤ 38V, V
≤ 24V, TSSOP-20E, 3mm × 4mm QFN-20
≤ 24V, I
≤ 10V, I
≤ 0.93V
R
R
C
180μF
10mΩ
SENSE1
SENSE2
9mΩ
C
220μF
OUT1
38901 TA06
IN
OUT(BUCK)
Q
Q
IN
= 50μA/170μA
= 30μA/80μA
, SSOP-28
MTOP1, MTOP2, MBOT1, MBOT2: RJK0651DPB
L1: COILCRAFT SER1360-802KL
L2: COILCRAFT SER1360-472KL
C
C
D1, D2: DFLS1100
OUT1
OUT2
V
12V
3A
V
12.5V TO 60V
OUT1
IN
: 16SVP180MX
: SANYO 6TPE470M
Up to 24V, V
C
470μF
V
3.3V
5A
OUT2
OUT2
© LINEAR TECHNOLOGY CORPORATION 2010
OUT(BOOST)
LT 0111 REV A • PRINTED IN USA
IN
IN
IN
IN
≤ 60V,
≤ 38V,
≤ 100V,
≤ 36V,
Up to 60V
38901fa