LA5735M-TLM-E

11707 MS PC 20061030-S00008 No.A0588-1/7
Any and all SANYO Semiconductor products described or contained herein do not have specifications
that can handle applications that require extremely high levels of reliability, such as life-support systems,
aircraft's control systems, or other applications whose failure can be reasonably expected to result in
serious physical and/or material damage. Consult with your SANYO Semiconductor representative
nearest you before using any SANYO Semiconductor products described or contained herein in such
applications.
SANYO Semiconductor assumes no responsibility for equipment failures that result from using products
at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition
ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor
products described or contained herein.
LA5735M
Overview
The LA5735M is a separately-excited step-down switching regulator (variable type).
Functions
Time-base generator (300kHz) incorporated.
Current limiter incorporated.
Thermal shutdown circuit incorporated.
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Input voltage V
IN
34 V
Maximum output current I
O
max 0.6 A
SW pin application reverse voltage V
SW
-1 V
VOS pin application voltage V
VOS
-0.2 to 7 V
Allowable power dissipation Pd max Mounted on a circuit board.* 0.8 W
Operating temperature Topr -30 to +125 °C
Storage temperature Tstg -40 to +150 °C
* Specified circuit board : 114.3×76.1×1.6mm
3
, glass epoxy board.
Recommended Operating Conditions at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Input voltage range V
IN
4.5 to 32 V
Monolithic Linear IC
Separately-Excited Step-Down
Switching Regulator
(Variable Type)
Orderin
g
numbe
r
: ENA0588
LA5735M
No.A0588-2/7
Electrical Characteristics at Ta = 25°C, V
IN
= 15V
Ratings
Parameter Symbol Conditions
min typ max
Unit
Reference voltage V
OS
I
O
= 0.3A 1.20 1.23 1.26 V
Reference pin bias current I
FB
1 2 µA
Switching frequency fosc 240 300 360 kHz
Short-circuit protection circuit
operating switching frequency
fscp 15 kHz
Saturation voltage Vsat I
OUT
= 0.3A, V
OS
= 0V 1 1.15 V
Maximum on duty D max V
OS
= 0V 100 %
Minimum on duty D min V
OS
= 5V 0 %
Output leakage current Ilk V
IN
= 30V,SW
OUT
= -0.4V 200 µA
Supply current Iin V
OS
= 2V 5 10 mA
Current limiter operating voltage I
S
0.7 A
Thermal shutdown operating
temperature
TSD Designed target value. * 165 °C
Thermal shutdown Hysteresis
width
TSD Designed target value. * 15 °C
* Design target value : Design guarantee values are replaced with electrical measurements, and are not measured by temperature.
Package Dimensions
unit : mm (typ)
3032D
SANYO : MFP8(225mil)
14
85
5.0
0.63
6.4
0.15
0.35
1.27
(0.65)
4.4
(1.5)
1.7max
0.1
Ambient temperature, Ta °C
Pd max
-- Ta
Allowable power dissipation, Pd max W
0
0.2
0.4
0.6
0.8
1
--30--20 0 20 40 60
0.16
14
0
80 100 120
Mounted on a board
Designated board : 114.3×76.1×1.6mm
3
glass epoxy
LA5735M
No.A0588-3/7
Pin Assignment
Block Diagram
Note : Since the NC pins are not connected within the IC package, they can be used as connection points.
Application Circuit Example
NC NC GND NC
V
IN
NC SW
OUT
V
OS
V
IN
SW
OUT
V
OS
GND
+
+
L1
68µH
C1
470µF
/50V
R1
R2
C2
100µF
D1
SBD
LA5735M
C3
1000pF
1
V
IN
2
NC
5
NC
7
NC
8NC
Reg.
OSC
Reset
Drive
OCP
TSD
VREF
Amp.
Comp.
3
SW
OU
T
4
V
OS
6
GND

LA5735M-TLM-E

Mfr. #:
Manufacturer:
ON Semiconductor
Description:
Switching Voltage Regulators
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet