参数资料
| 型号： | LV5768M-TLM-H |
| 厂商： | ON Semiconductor |
| 文件页数： | 2/15页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM MFP14S |
| 标准包装： | 1,000 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 500kHz |
| 占空比： | 95% |
| 电源电压： | 8.5 V ~ 42 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | * |
| 包装： | * |
LV5768M
Recommended Operating Range at Ta = 25 ° C
Parameter
Supply voltage range
Error amplifier input voltage
Oscillatory frequency
Symbol
VIN
VFB
FOSC
Conditions
Ratings
8.5 to 42
0 to 1.6
80 to 500
Unit
V
V
kHz
Electrical Characteristics at Ta = 25 ° C, VIN = 12V
Parameter
Symbol
Conditions
min
Ratings
typ
max
Unit
Reference voltage block
Internal reference voltage
5V power supply
Vref
VDD
Including offset of E/A
IOUT = 0 to 5mA
0.654
4.7
0.67
5.2
0.686
5.7
V
V
Triangular waveform oscillator block
Oscillation frequency
Frequency variation
Oscillation frequency fold back
FOSC
FOSC DV
VOSC FB
RT=220k ?
VIN = 8.5 to 42V
FB voltage detection after SS ends
110
125
1
0.1
140
kHz
%
V
detection voltage
Oscillation frequency after fold back
FOSC FB
1/3FOSC
kHz
ON/OFF circuit block
IC start-up voltage
IC off voltage
VEN on
VEN off
2.5
1.0
3.0
1.2
3.5
1.4
V
V
Soft start circuit block
Soft start source current
Soft start sink current
ISS SC
ISS SK
EN > 3.5V
EN < 1V, VDD = 5V
4
5
2
6
μ A
mA
UVLO circuit block
UVLO lock release voltage
UVLO hysteresis
VUVLO
VUVLO H
8
0.7
V
V
Error amplifier
Input bias current
IEA IN
100
nA
Error amplifier gain
Sink output current
Source output current
GEA
IEA OSK
IEA OSC
FB = 1.0V
FB = 0V
1000
1400
-100
100
1800
μ A/V
μ A
μ A
Current detection amplifier gain
over current limiter circuit block
GISNS
1.5
Reference current
Over current detection comparator
ILIM1
VLIM OFS
-10%
-5
18.5
+10%
+5
μ A
mV
offset voltage
Over current detection comparator
VIN-0.45
VIN
V
common mode input range
PWM comparator
Input threshold voltage
(FOSC=125kHz)
Maximum ON duty
Vt max
Vt0
DMAX
Duty cycle = DMAX
Duty cycle = 0%
0.9
0.4
85
1.0
0.5
90
1.1
0.6
95
V
V
%
Output block
Output stage ON resistance
RONH
5
Ω
(the upper side)
Output stage ON resistance
RONL
5
Ω
(the under side)
Output stage ON current
IONH
240
mA
(the upper side)
Output stage ON current
IONL
240
mA
(the under side)
The whole device
Standby current
Mean consumption current
ICCS
ICCA
EN < 1V
EN > 3.5V
3
10
μ A
mA
Continued on next page.
No.A1988-2/15
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