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PDF LV5052V Data sheet ( Hoja de datos )
| Número de pieza | LV5052V | |
| Descripción | DC-DC Converter Controller | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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Ordering number : ENA1394
LV5052V
Bi-CMOS IC
Built-in 2-channels
DC/DC Converter Controller
Overview
The LV5052V is a high efficiency DC/DC converter controller with 2-channels IC adopting a synchronous rectifying
system. Incorporating numerous functions on a single chip with easy external setting, it can be used for a wide variety of
applications. This device is optimal for use in internal power supply systems which are used in electronic devices,
LCD-TVs, DVD recorders, etc.
Functions
• Step-down DC/DC converter controller with 2-channel
• Built-in input UVLO circuit, Over current detection function, soft-start/soft-stop function and Start-up delay circuit
• Built-in output voltage monitor function (Under voltage protection with power good and timer latch)
• 180 degree interleaving operation during 1-phase to 2-phase
• Synchronized operation is possible (Master-slave operation is possible when using plural devices)
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Supply voltage
Output peak current
Allowable power dissipation
VIN
IOUT
Pd max
Mounted on a specified board *1
Operating temperature
Topr
Storage temperature
Tstg
*1: Specified board: 114.3mm × 76.1mm ×1.6mm, glass epoxy board.
Ratings
18
±1.0
1.0
-20 to 85
-55 to +150
Unit
V
A
W
°C
°C
Continued on next page.
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer's products or
equipment.
12809 MS 20081209-S00004 No.A1394-1/9
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
www.DataSheet.co.kr
Block Diagram
LV5052V
COMP1
BG
reference
Voltage
and
BG
current
generator
IREF
Current
bias
Vref
0.84V
VIN
9.0V
/8.0V
VLIN5
4.5V
/4.0V
POR
Vref
VIN
5V REG
(always ON)
VLIN5 5.3V
ILIM
Comp
Internal Bias
Typ 85µA
ILIM1
CH1
output
FB1
0.82Vref
1.18Vref
SS1
3.5µA
Error Amp
UV1
OV1
Vref
1.6V
SD
PWM comp
PWM logic
SKIP control
SS1EN
D
Corrective
ramp
SD
SENSE
Amp
Shifter
& latch
RQ
SQ
Shoot through
protection
sequencer
TD1
COMP2
3.5µA
POR
2.6V
0 deg
CONT1
Active
discharge
Rdson = 15Ω
ILIM
Comp
VIN
RSNS1
CBOOT1
HDRV1
SW1
VDD
LDRV1
Typ 85µA
ILIM2
CH2
output
FB2
0.82Vref
1.18Vref
SS2
3.5µA
Error Amp
UV2
OV2
Vref
1.6V
SD
PWM comp
PWM logic
SKIP control
SS2EN
D
Corrective
ramp
SD
SENSE
Amp
Shifter
& latch
RQ
SQ
Shoot through
protection
sequencer
VIN
TD2
3.5µA
POR
2.6V
180 deg
CONT2
CONT1
CONT2
POR
Active
discharge
Rdson = 15Ω
UV1
SS1EN
UV2
D
SS2EN
D
PGOOD1 PGOOD2
OV1
1µs
9µA
OV2
delay
RQ
0V
SQ
UV
2.6V timeout
UV_DELAY
0 180
deg deg
OSC
300kHz
CT CLKO SGND
Sync. pulse out
5V
0V
RSNS2
CBOOT2
HDRV2
SW2
LDRV2
PGND
Input
Power
Supply
CH1
output
CH2
output
No.A1394-5/9
Datasheet pdf - http://www.DataSheet4U.net/
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet LV5052V.PDF ] | |
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