LTC1628IG-PG Linear Technology, LTC1628IG-PG Datasheet - Page 9
![IC REG SW 2PHASE STEPDOWN 28SSOP](/photos/6/59/65971/161-28-ssop_sml.jpg)
LTC1628IG-PG
Manufacturer Part Number
LTC1628IG-PG
Description
IC REG SW 2PHASE STEPDOWN 28SSOP
Manufacturer
Linear Technology
Type
Step-Down (Buck)r
Datasheet
1.LTC1628CGPBF.pdf
(32 pages)
Specifications of LTC1628IG-PG
Internal Switch(s)
No
Synchronous Rectifier
Yes
Number Of Outputs
2
Voltage - Output
Adj to 0.8V
Current - Output
3A
Frequency - Switching
220kHz
Voltage - Input
3.5 ~ 30 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
28-SSOP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Power - Output
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LTC1628IG-PG#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
FU CTIO AL DIAGRA
PI FU CTIO S
PGOOD: (LTC1628-PG Only) Open-Drain Logic Output.
PGOOD is pulled to ground when the voltage on either
V
OSENSE
R6
R5
V
U
U
IN
V
+
5V
SEC
FREQSET
STBYMD
3.3V
FLTCPL
EXTV
INTV
SGND
FCB
V
IN
pin is not within 7.5% of its set point.
OUT
CC
0.18 A
CC
U
U
3V
MERGE LOGIC
OSCILLATOR
4.8V
+
–
1.19V
4.5V
0.8V
1M
–
+
U
–
+
+
–
CLK1
CLK2
RUN/SS1
RUN/SS2
INTERNAL
SUPPLY
V
LDO
REG
5V
REF
BINH
FCB
DUPLICATE FOR SECOND
CONTROLLER CHANNEL
W
1.2 A
6V
4(V
0.86V
FB
SLOPE
COMP
)
I1
S
R
+
–
0.55V
Q
Q
–
DROP
OUT
DET
45k
Figure 2
–
+
+
4(V
SHDN
+
RST
FB
B
3mV
)
BOT
TOP ON
NC: These “No Connect” pins are not tied internally to
anything. On the PC layout, these pin landings should be
connected to the SGND plane under the IC.
–
SHDN
FCB
START
45k
SOFT
RUN
–
+
OV
2.4V
EA
I2
SWITCH
–
+
+
–
LOGIC
V
FB
0.80V
0.86V
LTC1628/LTC1628-PG
TOP
BOT
INTV
CC
INTV
30k
30k
CC
V
SENSE
SENSE
RUN/SS
BOOST
PGND
OSENSE
SW
I
TG
BG
TH
+
–
INTV
CC
R1
D
C
C
C
B
R2
B
D
C2
SS
C
SEC
C
V
IN
R
C
D
R
1
SENSE
+
C
C
IN
SEC
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