Ordering number : ENA1669
Bi-CMOS IC
LV5071M
Overview
DC/DC Converter IC
The SANYO LV5071M is a DC/DC converter IC that has a step-down DC/DC converter output and an
externally-controllable GPO output for discharging the output capacitor.
Features
•
One channel of synchronous rectifying PWM controlled step-down DC/DC converter output (0.8V to 3.3V/1A)
•
One channel of externally controllable GPO output for discharging the output capacitor
•
Built-in thermal shutdown circuit
•
Built-in hiccup recovery
Specifications
Maximum Ratings
at Ta = 25°C
Parameter
Maximum supply voltage
Input pin voltage
Output pin voltage
Allowable Power dissipation
Operating temperature
Storage temperature
Symbol
VIN
VINC
VOUT
Pd max
Topr
Tstg
VIN, PVIN
GPI, ENDCO
LX, GPO
Ta
≤
25°C Mounted on a circuit board.*
Conditions
Ratings
-0.3 to 6.0
-0.3 to 6.0
-0.3 to 6.0
1.5
-20 to +85
-40 to +125
Unit
V
V
V
W
°C
°C
* Specified circuit board : 50.0mm
×
50.0mm
×
1.6mm, 2-layer glass epoxy printed circuit board, Wiring density on the backside = 54%
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.
31010 SY PC 20100218-S00004 No.A1669-1/9
LV5071M
Operating Conditions
at Ta = 25°C
Parameter
Supply voltage
Symbol
VIN
Conditions
VIN = PVIN, 0.8V
≤
VOUT
≤
1.3V
VIN = PVIN, 1.3V
≤
VOUT
≤
1.9V
VIN = PVIN, 1.9V
≤
VOUT
≤
3.3V
Input pin voltage
VINC
GPI, ENDCO
Ratings
2.95 to 5.5
3.2 to 5.5
4.5 to 5.5
-0.3 to VIN
Unit
V
V
V
V
Electrical Characteristics, Current drain, unless otherwise specified
at Ta
=
25°C, VIN = 5.0V, no load
Parameter
Standby current drain
Current drain DCDC ON
Symbol
ICCSB
ICCFL
Conditions
min
GPI = ENDCO = Low
GPI = ENDCO = High, VOUT = 1.8V
Ratings
typ
0.5
12
max
10
16
μA
mA
Unit
DC/DC, unless otherwise specified
at Ta
=
25°C, VIN = 5.0V, VOUT = 1.8V, no load
Parameter
FB voltage
Current limit peak value
Efficiency 1
Efficiency 2
Load regulation
Frequency
LX ON resistance
Symbol
VFB
CLIMIT
EF1
EF2
VL
Fosc
RLXP
RLXN
IOH = -300mA, Pch
IOL = 300mA, Nch
IO = 0.5A, VOUT = 3.3V
IO = 0.5A, VOUT = 1.8V
IO = 1mA to 1A
1.7
IO = 10mA
Conditions
min
0.49
1.5
90
82
15
2.2
0.15
0.15
45
2.7
Ratings
typ
0.50
max
0.51
V
A
%
%
mV
MHz
Ω
Ω
Unit
GPI, ENDCO Input, GPO Output, unless otherwise specified
at Ta
=
25°C, VIN = 5.0V
Parameter
GPO Output current
GPO output voltage Low-level
GPO output leakage current
GPI/ENDCO input voltage High-level
GPI/ENDCO input voltage Low-level
Symbol
Igpo
VOL
ILK
VINH
VINL
Conditions
min
GPI = 0V, GPO = 1.5V
GPI = 0V, IOL = 5mA
GPO
Input High-level GPI, ENDCO
Input Low-level GPI, ENDCO
1.5
0
0.3
7.5
Ratings
typ
15
0.5
0
max
37.5
1
10
mA
V
μA
V
V
Unit
Package Dimensions
unit : mm (typ)
3384
Pd max -- Ta
TOP VIEW
5.0
(3.4)
12
SIDE VIEW
BOTTOM VIEW
2.0
Allowable power dissipation, Pd max -- W
Specified circuit board : 50.0
×
50.0
×
1.6mm
3
2-layer glass epoxy board,
Wiring density on the
backside = 54%
1.50
1.5
(2.6)
6.4
4.4
1.0
1
2
0.3
0.8
0.15
0.63
0.60
0.5
(0.5)
1.7 MAX
SIDE VIEW
(1.5)
0
--20
0
20
40
60
80
100
Ambient temperature,
Ta --
°C
0.05
SANYO : MFP12S(225mil)
No.A1669-2/9
LV5071M
Block Diagram
0.22μF
(1.25V)
BGR
7
Vref
6
GPO
Cvin = 1μ to 10μF
0.6kΩ to 5.6kΩ
Cf = 1000pF
(0.5V)
9
Soft start
Thermal
protection
10
VIN
3
OSC
PWM
control
Output
control
2
LX
NC
+
-
4
PVIN
5.0V
GPI
Cvin = 10μF
×
3
ENDCO
2.2μH
Current
protection
12
PGND2
1
PGND1
Pin Descriptions
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
Pin name
PGND1
LX
NC
PVIN
FB
GPO
BGR
GND
GPI
VIN
ENDCO
PGND2
DC/DC power-dedicated ground
Switching regulator PWM output pin
NC
DC/DC power dedicated power pin
DC/DC feedback voltage input pin
GPO output for discharging the output capacitor
Internal reference voltage output pin
Signal ground
GPO output control pin. L : Output capacitor discharge
Signal system power supply
DC/DC output control pin. Low : OFF, High : ON
DC/DC power dedicated ground
Description
Co = 22μF
11
Soft start
VOUT
0.8V
to
3.3V
(1A)
1kΩ
No.A1669-4/9
GND
8
5
FB
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
