BA6129AF-E2 Rohm Semiconductor, BA6129AF-E2 Datasheet
BA6129AF-E2
Specifications of BA6129AF-E2
Available stocks
Related parts for BA6129AF-E2
BA6129AF-E2 Summary of contents
Page 1
... SRAMs and other similar components. These ICs are configured of a reset signal and CS signal output unit and a power supply switching unit. If the BA6129AF detects that the power supply has dropped to 3.5V or lower, it outputs the CS, CSB, and Reset signals to set the SRAM in backup mode. If the voltage drops to 3.3V or lower, the power supply switches to the battery ...
Page 2
... GND Pin 4 Battery power supply Pin 8 Power supply ( Pin 6 Power supply output REF – + – + – GND Reset CS Function — Pin 3 CS output 3 GND 8 GND BA6129AF / BA6162 / BA6162F CSB BAT V CC Pin 5 6 CSB output 5 Pin 6 Power supply output GND 4 6 ...
Page 3
... Memory ICs • Electrical characteristics BA6129AF (unless otherwise noted 25°C, VR Parameter No-load current dissipation voltage differential 1 Vo output voltage 1 Vo output voltage 2 Vo output voltage 3 Detection voltage Detection hysteresis voltage Reset output low level voltage Reset leakage current Reset operating limit voltage ...
Page 4
... BH – 0.05 — 0.05 VB — I — 0.5 CCB — V 0.20 0.03 SAT2 2.70 — 2.60 — 2. – 0.5 — — — I — 0.1 OR BA6129AF / BA6162 / BA6162F = 10k ) RES Unit Conditions 5V BAT 5V 3V BAT 5V 3V BAT 5V 3V BAT 5V 3V BAT ...
Page 5
... Memory ICs • Measurement circuit OPL BA6129AF / BA6162 / BA6162F – V SAT RES BA6129AF R RES (BA6162 / F) 10k GND I RES RES OPL S Fig 200k CSB CSB CCB BAT ...
Page 6
... CS signal (CS-Low, CSB-High) are output by the logic output function, and the SRAM (or other memory device) is switched to backup mode. If the power supply V the switching voltage (BA6129AF and BA6162 / F: V 3.3Vtyp. when V rises), the SBD develops a forward bias because the PNP power transistor is off. The power supply output ...
Page 7
... CC These ICs are designed to operate with at V but can also operate at V values of other than 5V. CC However, the following conditions must be met: (equation < V < CCMax. V – V < BAT BA6129AF / BA6162 / BA6162F ref – + – + – BATTERY 3V Fig. 3 (2) Battery voltage V = 5V, ...
Page 8
... OUTPUT CURRENT Fig. 8 Output voltage vs. output current (!) (when power supply is detected BAT 10k RES RES POWER SUPPLY VOLTAGE: V Fig. 11 CSB output voltage vs. power supply voltage BA6129AF / BA6162 / BA6162F 10k RES RES (V) POWER SUPPLY VOLTAGE Fig. 6 Reset output voltage vs. power supply voltage 2 10k ...
Page 9
... SOP8 5 4.9 4.8 4 OUTPUT CURRENT: I Fig. 14 Output voltage vs. output current (!) (when power supply is detected) BA6162 0.15 BA6129AF / BA6162 / BA6162F 2 BAT = 10k RES = V RES CC 2.8 2.7 2 100 OUTPUT CURRENT: I (mA) O Fig. 15 Output voltage vs. output current (@) (when using battery backup) 9 ...
Page 10
Appendix 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 ...