ETC LA5645M

Ordering number : ENN6489
Monolithic Linear IC
LA5645M
Constant-Voltage/Constant-Current Control IC
Overview
Package Dimensions
The LA5645M is a constant-voltage/constant-current
control IC that incorporates low-voltage operational
amplifiers and a high-precision reference voltage circuit
(VREF = 1.5 V ±1.0%). This device is optimal for use as a
secondary side controller in battery chargers, switching
regulators, and similar products.
unit: mm
3032B-MFP8
8
0.625
[LA5645M]
5
4.4
1
4
1.8max
Operating supply voltage: 2.5 to 14 V
High-precision reference voltage: 1.5 V ±1.0%
PC pin current: 60 mA (max)
Current drain: 3 mA (max)
Input offset voltage: 2 mV (max)
0.15
1.5
5.1
0.1
•
•
•
•
•
5.15
6.4
Features
0.35
1.27
0.645
SANYO: MFP8
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Supply voltage
VCC max
14.5
Differential input voltage
VID max
14.5
PC pin current
IPC max
60
Allowable power dissipation
Pd max
Unit
V
V
mA
Independent IC
300
mW
Mounted on the specified printed circuit board*
800
mW
Operating temperature
Topr
–40 to +85
°C
Storage temperature
Tstg
–50 to +150
°C
Ratings
Unit
Note: * Specified printed circuit board: 76.1 × 114.3 × 1.6 mm3, glass epoxy board.
Operating Conditions at Ta = 25°C
Parameter
Recommended supply voltage
Symbol
Vopr
Conditions
2.5 to 14
V
Any and all SANYO 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 representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO 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 products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
83000RM (OT) No. 6489-1/5
LA5645M
Pd max — Ta
Allowable power dissipation, Pdmax — W
1.0
Board size: 76.1 × 114.3 × 1.6 mm3
Mounted on the specified Board material: glass epoxy
printed circuit board
0.8
0.6
0.41
0.4
Independent IC
0.3
0.2
0.16
0.0
–20
0
20
40
60
80
100
Ambient temperature, Ta — °C
Electrical Characteristics at Ta = 25°C, VCC = 5 V
Parameter
Symbol
Current drain
ICC
Ratings
Conditions
min
typ
IPC = OFF
1
Leakage current
IPC LEAK
VCC = VPC = 14 V
Saturation voltage
VPC (sat)
IPC = 50 mA
Reference voltage
VREF
IREF = 0 mA
1485
3
mA
100
µA
0.5
0.7
1500
1515
mV
30
mV
mV
∆VREF/∆IREF IREF = 0 to 5 mA
Reference voltage regulation
Unit
max
V
[Amplifier Block] (Characteristics common to both channels A and B)
Input offset voltage
VIO
0.5
2
Input offset current
IIO
5
50
nA
Input bias current
IB
80
250
nA
Voltage gain
AV
Common-mode input voltage range
Open loop gain (design guarantee*)
80
VICM
0
dB
VCC – 2
V
Slew rate
SR
Design guarantee*
0.8
V/µs
Gain-bandwidth product
GB
Design guarantee*
2
MHz
Note: * Design guarantee value. These parameters are not measured.
Pin Assignment
8 VCC
PC 1
–
A
+
A–INPUT 2
VREF
+
B
7 VREF
–
A+INPUT 3
6 B–INPUT
GND 4
5 B+INPUT
A13183
No. 6489-2/5
LA5645M
ICC — Ta
1200
ICC — VCC
1200
VCC = 5 V
Ta = 25 °C
Current drain, ICC — µA
Current drain, ICC — µA
1000
1000
800
600
800
600
400
200
400
–50
0
50
100
0
0
150
5
VREF — IREF
2.0
10
15
Supply voltage, VCC — °C
Ambient temperature, Ta — °C
VREF — VCC
1.55
Ta = 25 °C
Reference voltage, VREF — V
Reference voltage, VREF — V
VCC = 5 V
Ta = 25 °C
1.8
1.6
1.4
1.2
1.50
1.45
1.40
1.35
1.30
1.0
0
10
20
1.25
0
30
5
Pin 7 output current, IREF — mA
VIO — Ta
3
10
15
Supply voltage, VCC — V
VREF — Ta
1.500
1.498
2
1
Channel A
0
offset
Channel B offset
–1
–2
–3
–50
VCC = 5 V
Reference voltage, VREF — V
Input offset voltage, VIO — mV
VCC = 5 V
1.496
1.494
1.492
1.490
1.488
0
50
100
Ambient temperature, Ta — °C
150
1.486
–50
0
50
100
150
Ambient temperature, Ta — °C
No. 6489-3/5
LA5645M
VPC(sat) — IPC
VCC = 5 V
Ta = 25 °C
250
200
150
100
50
0
0
20
40
60
VCC = 5 V
IPC = 50 mA
500
400
300
200
100
0
–50
80
VCC = 5 V
6
Input offset current, IIO — nA
Input bias current, IB — nA
IIO — Ta
8
VCC = 5 V
90
80
70
Cha
60
Cha
nne
lB
nnel
A
50
40
30
4
Channel A
2
0
Channel B
–2
–4
–6
20
–50
0
50
100
–8
–50
150
0
Pha
150
180
se
40
Gain
20
0
0
VCC = 5 V
Ta = 25 °C
Channel B Amp
External resistor ratio
100 kΩ/1 kΩ
80
Voltage gain, VG — dB
Voltage gain, VG — dB
60
100
Phase, ø — degrees
VCC = 5 V
Ta = 25 °C
Channel A Amp
External resistor ratio
100 kΩ/1 kΩ
80
100
Channel B Voltage Gain and Phase vs. Frequency
Channel A Voltage Gain and Phase vs. Frequency
100
50
Ambient temperature, Ta — °C
Ambient temperature, Ta — °C
60
Pha
180
se
40
Gain
20
0
0
–20
–20
–40
1k
100
Ambient temperature, Ta — °C
IB — Ta
100
50
0
Pin PC current, IPC — mA
Phase, ø — degrees
300
VPC(sat) — Ta
600
Output saturation voltage, VPC(sat) — mV
Output saturation voltage, VPC(sat) — mV
350
2
3 5 7 10k
2
3 5 7100k 2
3 5 7 1M
Frequency, f — Hz
2
–180
3 5 7 10M
–40
1k
2
3 5 7 10k
2
3 5 7100k 2
3 5 7 1M
2
–180
3 5 7 10M
Frequency, f — Hz
No. 6489-4/5
LA5645M
Sample Application Circuit
+
PC (PHOTO COUPLER)
R1
R3
R5
8
VI
CONTROL IC
PC
R2
RSC
2
–
3
+
A
1
+
5
–
6
B
VREF=1.5V±1%
R4
4
Battery
7
R6
LA5645M
A13184
Specifications of any and all SANYO 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.
SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all
semiconductor products fail with some probability. It is possible that these probabilistic failures could
give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,
or that could cause damage to other property. When designing equipment, adopt safety measures so
that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective
circuits and error prevention circuits for safe design, redundant design, and structural design.
In the event that any or all SANYO products (including technical data, services) described or contained
herein are controlled under any of applicable local export control laws and regulations, such products must
not be exported without obtaining the export license from the authorities concerned in accordance with the
above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system,
or otherwise, without the prior written permission of SANYO Electric Co., Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the “Delivery Specification”
for the SANYO product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not
guaranteed for volume production. SANYO believes information herein is accurate and reliable, but
no guarantees are made or implied regarding its use or any infringements of intellectual property rights
or other rights of third parties.
This catalog provides information as of August, 2000. Specifications and information herein are subject to
change without notice.
PS No. 6489-5/5