LTC1622IS8#TR Linear Technology, LTC1622IS8#TR Datasheet - Page 2

• Manufacturer Part Number: LTC1622IS8#TR
• Description: IC CTRLR DC/DC STEP DOWN 8SOIC
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC1622IS8#TR

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 0.8 ~ 9.8 V
• Current - Output: 1A
• Frequency - Switching: 110kHz ~ 550kHz
• Voltage - Input: 2 ~ 10 V
• Operating Temperature: -45°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

ABSOLUTE
Input Supply Voltage (V
RUN/SS Voltage .......................................– 0.3V to 2.4V
SYNC/MODE Voltage ................................. – 0.3V to V
SENSE
PDRV Peak Output Current (< 10 s) ......................... 1A
Storage Ambient Temperature Range ... – 65 C to 150 C
LTC1622
PACKAGE/ORDER
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
SYMBOL
I
V
V
V
I
V
I
f
V
V
Consult factory for Military grade parts.
2
VFB
S
RUN/SS
OSC
FB
OVL
LOADREG
RUN/SS
SYNC/MODE
UVLO
V
OSENSE
SENSE
RUN/SS
V
I
T
–
TH
FB
JMAX
–
8-LEAD PLASTIC MSOP
Voltage .......................................... 2.4V to V
1
2
3
4
PARAMETER
Feedback Current
Regulated Feedback Voltage
Output Overvoltage Lockout
Reference Voltage Line Regulation
Output Voltage Load Regulation
Input DC Supply Current
RUN/SS Threshold
Soft-Start Current Source
Oscillator Frequency
SYNC/MODE Threshold
Undervoltage Lockout
= 125 C,
MS8 PACKAGE
TOP VIEW
Burst Mode Inhibited
Sleep Mode
Shutdown
Shutdown
JA
W
MAXIMUM
= 250 C/ W
8
7
6
5
V
PDRV
GND
SYNC/MODE
IN
IN
).........................– 0.3V to 10V
W W
INFORMATION
U
MS8 PART MARKING
RATINGS
LTC1622CMS8
ORDER PART
W
NUMBER
LTDB
CONDITIONS
(Note 3) V
(Note 3) Commercial Grade
(Note 3) Industrial Grade
Referenced to Nominal V
V
Measured in Servo Loop; V
Measured in Servo Loop; V
(Note 4)
V
V
V
V
Commercial Grade
Industrial Grade
V
V
V
V
V
V
U
IN
IN
ITH
RUN/SS
RUN/SS
RUN/SS
FB
FB
SYNC/MODE
IN
IN
A
= 4.2V to 8.5V (Note 3)
= 2.3V
Ramping Down
Ramping Up
= 0.8V
= 0V
= 0V, V
= 25 C. V
= 0V
= 0V, V
= 0V
FB
The
SYNC/MODE
U
Ramping Down
= 0.8V
(Note 1)
IN
IN
IN
IN
denotes specifications which apply over the full operating
= V
= 4.2V
UVLO
= 2.4V
Operating Temperature Range
Junction Temperature (Note 2) ............................. 125 C
Lead Temperature (Soldering, 10 sec).................. 300 C
SENSE
RUN/SS
OUT
Commercial ............................................ 0 C to 70 C
Industrial ........................................... – 45 C to 85 C
– 0.1V
V
ITH
ITH
I
TH
FB
T
–
JMAX
= 0.2V to 0.625V
= 0.9V to 0.625V
1
2
3
4
8-LEAD PLASTIC SO
= 125 C,
S8 PACKAGE
TOP VIEW
JA
= 150 C/ W
8
7
6
5
V
PDRV
GND
SYNC/MODE
IN
0.785
0.780
1.55
MIN
475
0.4
0.3
75
4
1
– 0.3
0.04
1.92
1.97
TYP
450
350
550
110
0.8
0.8
0.7
0.7
2.5
10
16
15
S8 PART MARKING
0.3
4
1
ORDER PART
LTC1622CS8
LTC1622IS8
NUMBER
0.815
0.820
1622
1622I
MAX
– 0.5
0.08
2.36
400
625
140
0.5
0.9
1.0
1.5
2.3
70
25
30
10
5
UNITS
%/V
kHz
kHz
nA
%
%
%
V
V
A
A
A
A
V
V
A
V
V
V