LT1952EGN#PBF Linear Technology, LT1952EGN#PBF Datasheet - Page 2

• Manufacturer Part Number: LT1952EGN#PBF
• Description: IC CTLR PWM SGL SWITCH 16-SSOP
• Manufacturer: Linear Technology

Specifications of LT1952EGN#PBF

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 560kHz
• Duty Cycle: 90%
• Voltage - Supply: 9.25 V ~ 25 V
• Buck: No
• Boost: No
• Flyback: Yes
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: Yes
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 16-SSOP
• Frequency-max: 560kHz
• Number Of Pwm Outputs: 1
• On/off Pin: No
• Adjustable Output: No
• Topology: Flyback/Forward
• Switching Freq: 80 TO 560kHz
• Operating Supply Voltage (max): 25V
• Synchronous Pin: Yes
• Rise Time: 50ns
• Fall Time: 30ns
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 16
• Package Type: SSOP N
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ABSOLUTE MAXIMUM RATINGS
LT1952/LT1952-1
(Note 1)
V
SYNC, SS_MAXDC, SD_V
COMP , BLANK, DELAY ............................... –0.3V to 3.5V
FB ................................................................– 0.3V to 3V
R
V
Operating Junction Temperature Range
(Notes 2, 5) ............................................–40°C to 125°C
Storage Temperature Range ...................–65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
ORDER INFORMATION
LEAD FREE FINISH
LT1952EGN#PBF
LT1952IGN#PBF
LT1952EGN-1#PBF
LT1952IGN-1#PBF
LEAD BASED FINISH
LT1952EGN
LT1952IGN
LT1952EGN-1
LT1952IGN-1
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
For more information on lead free part marking, go to:
For more information on tape and reel specifi cations, go to:
ELECTRICAL CHARACTERISTICS
PARAMETER
PWM CONTROLLER
Operational Input Voltage
V
V
V
V
SD_V
SD_V
SD_V
2
temperature range, otherwise specifi cations are at T
= 0.1μF , SD_V
IN
IN
IN
IN
IN
REF
OSC
Quiescent Current
Start-up Current (LT1952)
Start-up Current (LT1952-1)
Shutdown Current
(Note 8) ............................................... –0.3V to 25V
SEC
SEC (ON)
SEC (OFF)
..................................................................... –50μA
....................................................................–10mA
Threshold
Current
Current
SEC
= 2V, BLANK = 121k, DELAY = 121k, I
TAPE AND REEL
LT1952EGN#TRPBF
LT1952IGN#TRPBF
LT1952EGN-1#TRPBF
LT1952IGN-1#TRPBF
TAPE AND REEL
LT1952EGN#TR
LT1952IGN#TR
LT1952EGN-1#TR
LT1952IGN-1#TR
SEC
, I
SENSE
, OC ....– 0.3V to 6V
http://www.linear.com/leadfree/
PART MARKING
1952
1952I
19521
1952I1
PART MARKING
1952
1952I
19521
1952I1
CONDITIONS
I(V
I(V
FB = 0V, SS_MAXDC = 0V (Notes 4, 9)
FB = 0V, SS_MAXDC = 0V (Notes 4, 9)
SD_V
10V < V
SD_V
SD_V
A
http://www.linear.com/tapeandreel/
REF
REF
= 25°C. COMP = open, FB = 1.4V, R
SENSE
SEC
SEC
SEC
) = 0μA
) = 0μA, I
IN
= 0V
= SD_V
= SD_V
< 25V
The
= 0V, OC = 0V, OUT = 1nF , V
SENSE
l
SEC
SEC
denotes the specifi cations which apply over the full operating
Threshold + 100mV
Threshold – 100mV
= OC = Open
PIN CONFIGURATION
PACKAGE DESCRIPTION
16-Lead Plastic SSOP
16-Lead Plastic SSOP
16-Lead Plastic SSOP
16-Lead Plastic SSOP
PACKAGE DESCRIPTION
16-Lead Plastic SSOP
16-Lead Plastic SSOP
16-Lead Plastic SSOP
16-Lead Plastic SSOP
SS_MAXDC
IN
SD_V
T
OSC
= 15V, SOUT = open, unless otherwise specifi ed.
COMP
JMAX
SYNC
R
V
GND
OSC
REF
SEC
FB
= 178k, SYNC = 0V, SS_MAXDC = V
= 125°C, θ
16-LEAD PLASTIC SSOP
1
2
3
4
5
6
7
8
l
l
l
l
GN PACKAGE
JA
TOP VIEW
V
= 110°C/W, θ
1.261
IN
MIN
8.3
OFF
16
15
14
13
12
11
10
JC
9
1.32
TYP
460
400
240
= 40°C/W
5.2
10
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
0
SOUT
V
OUT
PGND
DELAY
OC
I
BLANK
SENSE
IN
1.379
MAX
11.7
700
575
350
6.5
25
REF
, V
UNITS
19521fd
REF
mA
μA
μA
μA
μA
μA
V
V