LT1619 Linear Technology, LT1619 Datasheet - Page 2

• Manufacturer Part Number: LT1619
• Description: Low Voltage Current Mode PWM Controller
• Manufacturer: Linear Technology

ABSOLUTE AXI U RATI GS
PACKAGE/ORDER I FOR ATIO
ELECTRICAL CHARACTERISTICS
LT1619
Input Voltage (V
Gate Drive Supply Voltage (DRV) ............. – 0.3V to 20V
Shutdown/Synch Voltage (S/S) ................ – 0.3V to 20V
Feedback Voltage (FB) .............................................. V
Compensation Voltage (V
Gate Drive Output Current (GATE) ........................ 1.5A
Consult LTC Marketing for parts specified with wider operating temperature ranges.
The
V
PARAMETER
Reference Voltage
Reference Line Regulation
FB Input Bias Current
Error Amplifier Transconductance
Error Amplifier Output Source Current
Error Amplifier Output Sink Current
Error Amplifier Clamp Voltage
Undervoltage Lockout Threshold
Input Voltage Range
Switching Frequency
Synchronization Frequency Range
Maximum Duty Cycle
Current Limit Threshold
Burst Mode Operation Current Limit
2
IN
= V
denotes specifications which apply over the full operating temperature range, otherwise specifications are at T
DRV
GND
S/S
FB
V
T
C
JMAX
8-LEAD PLASTIC MSOP
= 2.5V, V
1
2
3
4
= 125 C,
MS8 PACKAGE
TOP VIEW
IN
S/S
JA
) ................................... – 0.3V to 20V
W
= 200 C/ W
= V
8
7
6
5
IN
V
DRV
GATE
SENSE
, COMP open, V
IN
C
) ...................................... 3V
W W
U
MS8 PART MARKING
SENSE
ORDER PART
LT1619EMS8
W
NUMBER
CONDITIONS
Measured at the FB Pin
1.9V V
V
V
V
V
1.9V V
LTHC
= 0V unless otherwise noted.
U
FB
FB
FB
FB
= V
= 1V, V
= 1.5V, V
= 1V
REF
IN
IN
COMP
U
(Note 1)
18V
18V
COMP
IN
= 1V
= 1V
Current Sense Voltage (SENSE) ................. – 0.5V to V
Operating Temperature Range (Note 2) .. – 40 C to 85 C
Junction Temperature (Note 3) ............................. 125 C
Storage Temperature Range ................. – 65 C to 150 C
Lead Temperature (Soldering, 10 sec).................. 300 C
GND
S/S
FB
V
C
T
JMAX
1
2
3
4
8-LEAD PLASTIC SO
= 125 C,
S8 PACKAGE
TOP VIEW
JA
= 120 C/ W
8
7
6
5
V
DRV
GATE
SENSE
IN
1.22
1.65
MIN
220
370
1.6
1.9
80
88
40
4
4
S8 PART MARKING
0.004
1.24
TYP
170
300
8.7
8.7
10
92
53
10
ORDER PART
LT1619ES8
NUMBER
1619
A
MAX
1.26
0.05
1.85
= 25 C.
260
360
500
2.2
25
14
14
18
66
UNITS
1619fa
%/V
kHz
kHz
mV
mV
nA
IN
–1
%
V
A
A
V
V
V