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LTC1625 View Datasheet(PDF) - Linear Technology

Part Name
Description
MFG CO.
'LTC1625' PDF : 24 Pages View PDF
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LTC1625
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Input Supply Voltage (VIN, TK) ................. 36V to – 0.3V
Boosted Supply Voltage (BOOST) ............. 42V to – 0.3V
Boosted Driver Voltage (BOOST – SW) ...... 7V to – 0.3V
Switch Voltage (SW).....................................36V to – 5V
EXTVCC Voltage ...........................................7V to – 0.3V
ITH Voltage ................................................2.7V to – 0.3V
FCB, RUN/SS, SYNC Voltages .....................7V to – 0.3V
VOSENSE, VPROG Voltages ........(INTVCC + 0.3V) to – 0.3V
Peak Driver Output Current < 10µs (TG, BG) ............ 2A
INTVCC Output Current ........................................ 50mA
Operating Ambient Temperature Range
LTC1625C............................................... 0°C to 70°C
LTC1625I (Note 5) .............................. – 40°C to 85°C
Junction Temperature (Note 2) ............................. 125°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
PACKAGE/ORDER I FOR ATIO
TOP VIEW
EXTVCC 1
SYNC 2
RUN/SS 3
FCB 4
ITH 5
SGND 6
VOSENSE 7
VPROG 8
16 VIN
15 TK
14 SW
13 TG
12 BOOST
11 INTVCC
10 BG
9 PGND
GN PACKAGE
S PACKAGE
16-LEAD PLASTIC SSOP 16-LEAD PLASTIC SO
TJMAX = 125°C, θJA = 130°C/W (GN)
TJMAX = 125°C, θJA = 110°C/W (S)
ORDER PART
NUMBER
LTC1625CGN
LTC1625CS
LTC1625IGN
LTC1625IS
Consult factory for Military grade parts.
ELECTRICAL CHARACTERISTICS TA = 25°C, VIN = 15V unless otherwise noted.
SYMBOL
PARAMETER
Main Control Loop
IINVOSENSE
VOUT
Feedback Current
Regulated Output Voltage
1.19V (Adjustable) Selected
3.3V Selected
5V Selected
VLINEREG
Reference Voltage Line Regulation
VLOADREG
Output Voltage Load Regulation
VFCB
IFCB
VOVL
IPROG
IQ
Forced Continuous Threshold
Forced Continuous Current
Output Overvoltage Lockout
VPROG Input Current
3.3V VOUT
5V VOUT
Input DC Supply Current
Normal Mode
Shutdown
VRUN/SS
IRUN/SS
VSENSE(MAX)
TG tR
TG tF
RUN/SS Pin Threshold
Soft Start Current Source
Maximum Current Sense Threshold
TG Transition Time
Rise Time
Fall Time
CONDITIONS
MIN
VPROG Pin Open, ITH = 1.19V (Note 3)
ITH = 1.19V (Note 3)
VPROG Pin Open
VPROG = 0V
VPROG = INTVCC
VIN = 3.6V to 20V, ITH = 1.19V (Note 3),
VPROG Pin Open
ITH = 2V (Note 3)
ITH = 0.5V (Note 3)
VFCB Ramping Negative
VFCB = 1.19V
VPROG Pin Open
VPROG = 0V
VPROG = 5V
EXTVCC = 5V (Note 4)
VRUN/SS = 0V, 3.7V < VIN < 15V
VRUN/SS = 0V
VOSENSE = 1V, VPROG Pin Open
CLOAD = 3300pF
CLOAD = 3300pF
q 1.178
q 3.220
q 4.900
q
q
q 1.16
1.24
q 0.8
1.2
120
TYP
10
1.190
3.300
5.000
0.001
– 0.020
0.035
1.19
–1
1.28
– 3.5
3.5
500
15
1.4
2.5
150
50
50
MAX
50
1.202
3.380
5.100
0.01
– 0.2
0.2
1.22
–2
1.32
–7
7
30
2
4
170
150
150
UNITS
nA
V
V
V
%/V
%
%
V
µA
V
µA
µA
µA
µA
V
µA
mV
ns
ns
2
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