LTC1435 データシートの表示（PDF） - Linear Technology
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LTC1435 Datasheet PDF : 20 Pages
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LTC1435
ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage (VIN)......................... 36V to – 0.3V
Topside Driver Supply Voltage (Boost) ......42V to – 0.3V
Switch Voltage (SW)............................. VIN + 5V to – 5V
EXTVCC Voltage ........................................ 10V to – 0.3V
Sense+, Sense– Voltages ......... INTVCC + 0.3V to – 0.3V
ITH, VOSENSE Voltages .............................. 2.7V to – 0.3V
SFB, Run/SS Voltages .............................. 10V to – 0.3V
Peak Driver Output Current < 10µs (TG, BG) ............. 2A
INTVCC Output Current ........................................ 50mA
Operating Ambient Temperature Range
LTC1435C............................................... 0°C to 70°C
LTC1435I............................................ – 40°C to 85°C
Junction Temperature (Note 1)............................. 125°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER INFORMATION
TOP VIEW
COSC 1
RUN/SS 2
ITH 3
SFB 4
SGND 5
VOSENSE 6
SENSE– 7
SENSE+ 8
16 TG
15 BOOST
14 SW
13 VIN
12 INTVCC
11 BG
10 PGND
9 EXTVCC
G PACKAGE
S PACKAGE
16-LEAD PLASTIC SSOP 16-LEAD PLASTIC SO
TJMAX = 125°C, θJA = 130°C/ W (G)
TJMAX = 125°C, θJA = 110°C/ W (S)
Consult factory for Military grade parts.
ORDER PART
NUMBER
LTC1435CG
LTC1435CS
LTC1435IG
LTC1435IS
ELECTRICAL CHARACTERISTICS TA = 25°C, VIN = 15V, VRUN/SS = 5V unless otherwise noted.
SYMBOL PARAMETER
Main Control Loop
IIN VOSENSE
VOSENSE
∆VLINEREG
∆VLOADREG
Feedback Current
Feedback Voltage
Reference Voltage Line Regulation
Output Voltage Load Regulation
VSFB
Secondary Feedback Threshold
ISFB
Secondary Feedback Current
VOVL
Output Overvoltage Lockout
IQ
Input DC Supply Current
Normal Mode
Shutdown
VRUN/SS
Run Pin Threshold
IRUN/SS
Soft Start Current Source
∆VSENSE(MAX) Maximum Current Sense Threshold
TG Transition Time
TG tr
Rise Time
TG tf
Fall Time
BG Transition Time
BG tr
Rise Time
BG tf
Fall Time
Internal VCC Regulator
VINTVCC
Internal VCC Voltage
VLDO INT INTVCC Load Regulation
VLDO EXT EXTVCC Voltage Drop
VEXTVCC
EXTVCC Switchover Voltage
Oscillator
fOSC
Oscillator Frequency
CONDITIONS
(Note 2)
(Note 2)
VIN = 3.6V to 20V (Note 2)
ITH Sinking 5µA (Note 2)
ITH Sourcing 5µA
VSFB Ramping Negative
VSFB = 1.5V
EXTVCC = 5V (Note 3)
3.6V < VIN < 30V
VRUN/SS = 0V, 3.6V < VIN < 15V
VRUN/SS = 0V
VOSENSE = 0V, 5V
CLOAD = 3000pF
CLOAD = 3000pF
CLOAD = 3000pF
CLOAD = 3000pF
6V < VIN < 30V, VEXTVCC = 4V
IINTVCC = 15mA, VEXTVCC = 4V
IINTVCC = 15mA, VEXTVCC = 5V
IINTVCC = 15mA, VEXTVCC Ramping Positive
COSC = 100pF (Note 4)
MIN TYP MAX
10 50
q 1.178 1.19 1.202
0.002 0.01
q
0.5 0.8
q
– 0.5 – 0.8
q 1.16 1.19 1.22
–1 –2
1.24 1.28 1.32
260
16 25
q 0.8 1.3 2
1.5 3 4.5
130 150 180
50 150
50 150
50 150
40 150
q 4.8 5.0 5.2
– 0.2 – 1
130 230
q 4.5 4.7
112 125 138
2
UNITS
nA
V
%/V
%
%
V
µA
V
µA
µA
V
µA
mV
ns
ns
ns
ns
V
%
mV
V
kHz
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