LTC1628CG-SYNC#PBF Linear Technology, LTC1628CG-SYNC#PBF Datasheet - Page 2

• Manufacturer Part Number: LTC1628CG-SYNC#PBF
• Description: IC SW REG STEP-DOWN 28-SSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC1628CG-SYNC#PBF

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 2
• Voltage - Output: Adj to 0.8V
• Current - Output: 3A
• Frequency - Switching: 140kHz ~ 310kHz
• Voltage - Input: 3.5 ~ 30 V
• Operating Temperature: 0°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

ABSOLUTE AXI U RATI GS
LTC1628-SYNC
(Note 1)
Input Supply Voltage (V
Top Side Driver Voltages
(BOOST1, BOOST2) ...................................42V to – 0.3V
Switch Voltage (SW1, SW2) .........................36V to – 5V
INTV
(BOOST2-SW2), PGOOD .............................7V to – 0.3V
SENSE1
SENSE2
PLLIN, PLLFLTR, FCB, Voltage ............ INTV
I
Peak Output Current <10µs (TG1, TG2, BG1, BG2) ... 3A
INTV
Operating Temperature Range
Junction Temperature (Note 2) ............................. 125°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
temperature range, otherwise specifications are at T
SYMBOL
Main Control Loops
V
I
V
V
g
g
I
V
I
V
ELECTRICAL CHARACTERISTICS
2
VOSENSE1, 2
Q
FCB
TH1,
m1, 2
mGBW1, 2
OSENSE1, 2
REFLNREG
LOADREG
FCB
BINHIBIT
LTC1628CG-SYNC ................................... 0°C to 85°C
LTC1628IG-SYNC ............................... – 40°C to 85°C
CC,
CC
I
TH2
Peak Output Current ................................ 50mA
EXTV
+
–
, V
, SENSE2
Voltages ........................ (1.1)INTV
PARAMETER
Regulated Feedback Voltage
Feedback Current
Reference Voltage Line Regulation
Output Voltage Load Regulation
Transconductance Amplifier g
Transconductance Amplifier GBW
Input DC Supply Current
Forced Continuous Threshold
Forced Continuous Pin Current
Burst Inhibit (Constant Frequency)
Threshold
OSENSE1
CC
Normal Mode
Shutdown
, RUN/SS1, RUN/SS2, (BOOST1-SW1),
W
+
, V
, SENSE1
OSENSE2
IN
).........................36V to – 0.3V
W W
–
,
Voltages ...2.7V to – 0.3V
m
CONDITIONS
(Note 3); I
(Note 3)
V
(Note 3)
Measured in Servo Loop; ∆I
Measured in Servo Loop; ∆I
I
I
(Note 4)
V
V
V
Measured at FCB Pin
TH1, 2
TH1, 2
IN
IN
RUN/SS1, 2
FCB
= 15V; EXTV
U
= 3.6V to 30V (Note 3)
CC
CC
= 0.85V
A
= 1.2V; Sink/Source 5uA; (Note 3)
= 1.2V; (Note 3)
= 25°C. V
to – 0.3V
to – 0.3V
TH1, 2
= 0V, V
The
Voltage = 1.2V
CC
STBYMD
IN
●
Tied to V
denotes the specifications which apply over the full operating
= 15V, V
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specified with wider operating temperature ranges.
= Open;
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking:
TH
TH
OUT1
Voltage = 1.2V to 0.7V
Voltage = 1.2V to 2.0V
RUN/SS1, 2
; V
OUT1
= 5V
= 5V unless otherwise noted.
ORDER PART NUMBER
V
V
RUN/SS1
SENSE1
SENSE1
SENSE2
SENSE2
PLLFLTR
OSENSE1
3.3V
OSENSE2
PLLIN
SGND
LTC1628CG-SYNC
LTC1628IG-SYNC
I
I
FCB
OUT
TH1
TH2
*PGOOD ON THE LTC1628-SYNC
T
+
–
–
+
http://www.linear.com/leadfree/
JMAX
28-LEAD PLASTIC SSOP
10
11
12
13
14
1
2
3
4
5
6
7
8
9
= 125°C, θ
●
●
●
●
G PACKAGE
TOP VIEW
– 0.30
0.792
0.76
MIN
JA
= 95°C/W
U
28
27
26
25
24
23
22
21
20
19
18
17
16
15
– 0.18
0.800
0.002
0.800
– 0.1
PGOOD
TG1
SW1
BOOST1
V
BG1
EXTV
INTV
PGND
BG2
BOOST2
SW2
TG2
RUN/SS2
TYP
350
0.1
1.3
4.3
IN
– 5
20
3
CC
CC
W
0.808
MAX
– 0.5
– 0.1
– 50
0.02
0.84
0.5
4.8
35
1628syncfa
UNITS
mmho
U
MHz
%/V
nA
µA
µA
µA
%
%
V
V
V