LTC1436A Просмотр технического описания (PDF) - Linear Technology
Номер в каталоге
Компоненты Описание
Список матч
LTC1436A Datasheet PDF : 28 Pages
| |||
LTC1436A
LTC1436A-PLL/LTC1437A
ELECTRICAL CHARACTERISTICS TA = 25°C, VIN = 15V, VRUN/SS = 5V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX
VLINEREG
Reference Voltage Line Regulation
VIN = 3.6V to 20V (Note 2), VPROG Pin Open
0.002 0.01
VLOADREG
Output Voltage Load Regulation
ITH Sinking 5µA (Note 2)
ITH Sourcing 5µA (Note 2)
q
0.5
0.8
q
– 0.5 – 0.8
VSFB
Secondary Feedback Threshold
VSFB Ramping Negative
q 1.16 1.19 1.22
ISFB
Secondary Feedback Current
VSFB = 1.5V
–1
–2
VOVL
Output Overvoltage Lockout
VPROG Pin Open
1.24 1.28 1.32
IPROG
VPROG Input Current
0.5V > VPROG
INTVCC – 0.5V < VPROG < INTVCC
–3
–6
3
6
IQ
Input DC Supply Current
Normal Mode
Shutdown
EXTVCC = 5V (Note 3)
3.6V < VIN < 30V, VAUXON = 0V
VRUN/SS = 0V, 3.6V < VIN < 15V
280
16
25
VRUN/SS
RUN Pin Threshold
q 0.8
1.3
2
IRUN/SS
Soft Start Current Source
VRUN/SS = 0V
1.5
3
4.5
∆VSENSE(MAX) Maximum Current Sense Threshold
t ON(MIN)
Minimum On-Time
VOSENSE = 0V, 5V, VPROG Pin Open
Tested with Square Wave, SENSE – = 1.6V,
∆VSENSE = 20mV (Note 6)
130 150 180
250 300
TGL tr
TGL tf
TGL Transition Time
Rise Time
Fall Time
CLOAD = 3000pF
CLOAD = 3000pF
50
150
50
150
TGS tr
TGS tf
TGS Transition Time
Rise Time
Fall Time
CLOAD = 500pF
CLOAD = 500pF
90
200
50
150
BG Transition Time
BG tr
Rise Time
BG tf
Fall Time
CLOAD = 3000pF
CLOAD = 3000pF
50
150
40
150
Internal VCC Regulator
VINTVCC
Internal VCC Voltage
6V < VIN < 30V, VEXTVCC = 4V
q 4.8
5.0
5.2
VLDO INT
INTVCC Load Regulation
IINTVCC = 15mA, VEXTVCC = 4V
– 0.2
–1
VLDO EXT
EXTVCC Voltage Drop
IINTVCC = 15mA, VEXTVCC = 5V
130
230
VEXTVCC
EXTVCC Switchover Voltage
IINTVCC = 15mA, VEXTVCC Ramping Positive
q
4.5
4.7
Oscillator and Phase-Locked Loop
fOSC
Oscillator Frequency
VCO High
RPLLIN
IPLLLPF
PLL IN Input Resistance
Phase Detector Output Current
Sinking Capability
Sourcing Capability
Power-On Reset
COSC = 100pF, LTC1436 (Note 4),
LTC1436A-PLL/LTC1437A, VPLLLPF = 0V
LTC1436A-PLL/LTC1437A, VPLLLPF = 2.4V
fPLLIN < fOSC
fPLLIN > fOSC
112
125
138
200 240
50
10
15
20
10
15
20
VSATPOR
ILPOR
VTHPOR
t DPOR
POR Saturation Voltage
POR Leakage
POR Trip Voltage
POR Delay
IPOR = 1.6mA, VOSENSE = 1V, VPROG Pin Open
VPOR = 12V, VOSENSE = 1.2V, VPROG Pin Open
VPROG Pin Open, VOSENSE Ramping Negative
VPROG Pin Open
0.6
1
0.2
1
– 11 – 7.5 – 4
65536
UNITS
%/V
%
%
V
µA
V
µA
µA
µA
µA
V
µA
mV
ns
ns
ns
ns
ns
ns
ns
V
%
mV
V
kHz
kHz
kΩ
µA
µA
V
µA
%
Cycles
3
Share Link: 