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03W202A
System regulator for car stereo
BA4911
Description BA4911 is a system regulator IC for car stereo. This IC incorporates 1 channel of 5.0V output, 2 channels of 8.12V output, 1channel of 7.9V output, 1channel of 10.3V output and 2 channels of high side switch.
21.6 ± 0.5
Dimension (Unit : mm)
29.8 ± 0.2 24.0 ± 0.1 4.7 ± 0.2
R1.8
6.9 ± 0.1
7.0 ± 0.1
6.5 ± 0.5
Features 1) PNP output and low drop out type 2) Built-in output current limits circuit to protect IC from destruction by short 3) Built-in over-voltage protection circuit to deliver strong design for surge input to BACK UP and Vcc 4) 12pin power package perfect for space saving design 5) Built-in thermal protection circuit to protect IC from thermal destruction 6) Strong design against instant power failure of battery because VDD can be driven by load stored in BACK UP capacitor. Applications Car stereo Absolute Maximum Ratings (Ta=25°C)
Parameter Power supply voltage Power dissipation Operating temperature range Storage temperature range
1
1.2
1 2.54 0.6 1.2
12 0.4 ± 0.1
SIP-M12
Symbol Vcc Pd Topr Tstg Vcc PEAK -30 -55
Limits 36 3000 ~ ~ 50
Unit V mW
+85 +150
1
°C °C
V
Peak applied voltage
Derating : 27.2mW/°C for operation above Ta=25°C tr 1msec Applied time within 200msec
Recommended Operating Conditions (Ta=25°C)
Parameter Recommended supply voltage 1 Recommended supply voltage 2 Recommended supply voltage 3 Symbol Vcc1 Vcc2 Vcc3 Min. 10 8.2 11.4 Typ. 14.4 14.4 14.4 Max. 18 18 18 Unit V V V Conditions
Except VDD output, ILM output VDD output ILM output
Electric characteristic is not guaranteed. (Especially at low input voltage)
13.9 ± 0.3
Electrical characteristics (Unless otherwise noted; Ta=25°C, Vcc=14.4V)
Parameter
Standby circuit current 1 Standby circuit current 2 Output voltage (VDD) 1 Min. I/O voltage difference 1 Min. I/O voltage difference 2 Output current capacity Output voltage (AUDIO) 2 Min. I/O voltage difference Output current capacity I/O voltage difference (P.COM) 3 Output current capacity I/O voltage difference (P.ANT) 4 Output current capacity Output voltage (AM) 5 Min. I/O voltage difference Output current capacity Output voltage (FM) 6 Min. I/O voltage difference Output current capacity Output voltage (ILM) 7 Min. I/O voltage difference Output current capacity
Symbol IST1 IST2 VO1 VO1 VO1' IO1 VO2 VO2 IO2 VO3 IO3 VO4 IO4 VO5 VO5 IO5 VO6 VO6 IO6 VO7 VO7 IO7
Min. 4.80 300 7.80 200 300 300 7.5 50 7.8 50 9.9 250
Typ. 100 100 5.00 0.4 2.5 8.12 0.4 0.4 0.4 7.9 0.4 8.12 0.4 10.3 0.4 -
Max. 150 150 5.20 0.7 3.0 8.30 0.7 0.7 0.7 8.3 0.7 8.3 0.7 10.7 0.7 -
Unit µA µA V V V mA V V mA V mA V mA V V mA V V mA V V mA
Vcc=13.2V
Conditions
IO=300mA, Vcc=10~18V IO=300mA, VBU-VO1 IO=300mA, Vcc-VO1 VO14.8V IO2=200mA, Vcc=10~18V, -30°C~80°C IO2=200mA, Vcc-VO2 VO27.8V IO3=200mA VO313.7V IO4=200mA VO413.7V IO5=50mA VO57.5V IO6=50mA, Vcc=10~18V, -30°C~80°C IO6=50mA, Vcc-VO6 VO67.8V IO7=250mA, Vcc=10~18V IO7=250mA, Vcc-VO7 VO79.9V
*1 *1
IO5=50mA, Vcc=10~18V, -30°C~80°C
*1
*1 Design guaranteed This product is not designed for protection against radioactive rays. Output current capacity must be set below MINIMUM.
Block Diagram
Vcc
7
Over voltage protection
9
VBU
Pre Reg. Vref Vbuf
Thermal shut down
Vcc
8
VDD
Vcc
6
AUDIO
SW1 10
4 State
Vcc
2
P.CON
Vcc
3
P.ANT
Vcc
5
AM
SW2 11
3 State
Vcc
4
FM
GND
1
Vcc
12
ILM
BA4911
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document use silicon as a basic material. Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of with would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. About Export Control Order in Japan Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control Order in Japan. In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause) on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.0