參數(shù)資料
型號(hào)： LV8743V
廠商： SANYO SEMICONDUCTOR CO LTD
元件分類(lèi)： 穩(wěn)壓器
英文描述： 0.8 A SWITCHING CONTROLLER, 440 kHz SWITCHING FREQ-MAX, PDSO44
封裝： 0.275 INCH, SSOP-44
文件頁(yè)數(shù)： 12/21頁(yè)
文件大小： 268K
代理商： LV8743V
LV8743V
No.A0612-2/21
Recommended Operating Ratings at Ta = 25
°C
Parameter
Symbol
Conditions
Ratings
Unit
VM
10 to 35
V
Supply voltage range
VCC
4.5 to 5.5
V
Logic input voltage
VIN
0 to VCC+0.3
V
VREF1 input voltage
VREF1
0 to 3
V
Regulator output voltage
VO
10 to VM
V
Regulator output current
IO
0 to 100
mA
Error amplifier input voltage
VOA
0 to 3
V
Timing capacitor
CT
100 to 15000
pF
Timing resistor
RT
5 to 50
k
Triangle wave frequency
FOSC
10 to 800
kHz
Electrical Characteristics at Ta = 25°C, VM = 24V, VCC = 5V, VREF1 = 1.5V
Ratings
Parameter
Symbol
Conditions
min
typ
max
Unit
Overall Characteristics
VM current consumption
IM
PS = High, no load
2.5
3.5
mA
VCC current consumption
ICC
PS = High, no load
3.5
4.5
mA
VCC low-voltage cutoff voltage
VthVCC
3.2
3.5
3.8
V
Low-voltage cutoff hysteresis
VthHIS
60
110
160
mV
Thermal shutdown temperature
TSD
Design guarantee
180
°C
Thermal shutdown hysteresis
TSD
Design guarantee
40
°C
Motor Drivers [Charge pump block]
Step-up voltage
VGH
VM = 24V, VCC = 5V
28.3
28.8
29.3
V
Rise time
tONG
VGH = 10
F
50
100
ms
Oscillator frequency
Fchop
90
120
150
kHz
[Output block]
Ron1
IO = 300mA, sink side
1.1
1.4
Output on resistance
Ron2
IO = -300mA, source side
1.5
1.8
Output leakage current
IOleak
VO = 35V
50
A
Diode forward voltage
VD
ID = -300mA
1.0
1.3
V
[Logic input block]
IINL
VIN = 0.8V
3
8
15
A
Logic pin input current
IINH
VIN = 5V
30
50
70
A
Logic high-level input voltage
VINH
2.0
V
Logic low-level input voltage
VINL
0.8
V
[Current control block]
VREF input current
IREF1
VREF1 = 1.5V
-0.5
A
CR pin current
ICR
CR = 1.0V
-1.6
-1.25
-0.9
mA
MD pin voltage
VMD
MD = open
3.21
3.38
3.55
V
VHH
VREF1 = 1.5V, IO = H, I1 = H
0.291
0.300
0.309
V
VLH
VREF1 = 1.5V, IO = L, I1 = H
0.191
0.200
0.209
V
Current setting comparator
threshold voltage
VHL
VREF1 = 1.5V, IO = H, I1 = L
0.093
0.100
0.107
V
Switching Regulator Controller [Reference voltage block]
Output voltage
VREGS
Iregs = -1mA
2.475
2.500
2.525
V
Input stability
VDLI
VM = 10 to 35V
10
mV
Load stability
VDLO
Iregs = 0 to -3mA
10
mV
[Triangle wave oscillator block]
Oscillator frequency
FOSC
RT = 10k
, CT = 200pF
360
400
440
kHz
Frequency stability
FDV
VM = 10 to 35V
1
5
%
Current setting pin voltage
VRT
RT = 10k
0.89
0.96
1.03
V
Continued on next page.
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