LV5768V Datasheet, PDF (2/15 Pages) Sanyo Semicon Device – 1-channel Step-down Switching Regulator

LV5768V
Recommended Operating Range at Ta = 25°C
Parameter
Supply voltage range
Error amplifier input voltage
Oscillatory frequency
Symbol
VIN
VFB
FOSC
Conditions
Electrical Characteristics at Ta = 25°C, VIN = 12V
Parameter
Symbol
Conditions
Reference voltage block
Internal reference voltage
Vref
5V power supply
VDD
Triangular waveform oscillator block
Oscillation frequency
Frequency variation
Oscillation frequency fold back
detection voltage
Oscillation frequency after fold back
ON/OFF circuit block
FOSC
FOSC _DV
VOSC _FB
FOSC _FB
IC start-up voltage
IC off voltage
Soft start circuit block
VEN on
VEN off
Soft start source current
Soft start sink current
UVLO circuit block
ISS SC
ISS SK
UVLO lock release voltage
UVLO hysteresis
Error amplifier
VUVLO
VUVLO _H
Input bias current
Error amplifier gain
Sink output current
Source output current
Current detection amplifier gain
IEA _IN
GEA
IEA _OSK
IEA _OSC
GISNS
over current limiter circuit block
Reference current
Over current detection comparator
offset voltage
Over current detection comparator
common mode input range
PWM comparator
ILIM1
VLIM _OFS
Input threshold voltage
(FOSC=125kHz)
Vt max
Vt0
Maximum ON duty
DMAX
Output block
Output stage ON resistance
(the upper side)
Output stage ON resistance
(the under side)
Output stage ON current
(the upper side)
Output stage ON current
(the under side)
The whole device
RONH
RONL
IONH
IONL
Standby current
Mean consumption current
ICCS
ICCA
Including offset of E/A
IOUT = 0 to 5mA
RT=220kΩ
VIN = 8.5 to 42V
FB voltage detection after SS ends
EN > 3.5V
EN < 1V, VDD = 5V
FB = 1.0V
FB = 0V
Duty cycle = DMAX
Duty cycle = 0%
EN < 1V
EN > 3.5V
Ratings
Unit
8.5 to 42
V
0 to 1.6
V
80 to 500 kHz
Ratings
Unit
min
typ
max
0.654
4.7
0.67
0.686
V
5.2
5.7
V
110
125
1
0.1
1/3FOSC
2.5
3.0
1.0
1.2
140 kHz
%
V
kHz
3.5
V
1.4
V
4
5
6 μA
2
mA
8
V
0.7
V
1000
1400
-100
100
1.5
100
1800
nA
μA/V
μA
μA
-10%
-5
VIN-0.45
18.5
+10% μA
+5 mV
VIN
V
0.9
1.0
1.1
V
0.4
0.5
0.6
V
85
90
95
%
5
Ω
5
Ω
240
mA
240
mA
10 μA
3
mA
Continued on next page.
No.A2093-2/15