ML5238GAZ0FL

Dear customer LAPIS Semiconductor Co., Ltd. ("LAPIS Semiconductor"), on the 1st day of October, 2020, implemented the incorporation-type company split (shinsetsu-bunkatsu) in which LAPIS established a new company, LAPIS Technology Co., Ltd. (“LAPIS Technology”) and LAPIS Technology succeeded LAPIS Semiconductor’s LSI business. Therefore, all references to "LAPIS Semiconductor Co., Ltd.", "LAPIS Semiconductor" and/or "LAPIS" in this document shall be replaced with "LAPIS Technology Co., Ltd." Furthermore, there are no changes to the documents relating to our products other than the company name, the company trademark, logo, etc. Thank you for your understanding. LAPIS Technology Co., Ltd. October 1, 2020 L i thium - ion bat ter y monitoring LSI A nalog Front End type ML5238 The ML5238 is an analog front-end IC intended for 16-cell lithium-ion secondary battery pack protection systems. With the cell-by-cell voltage monitoring function, and the charge/discharge current monitoring function, it can protect each cell against over-charge, over-discharge and over-current, using the external microcontroller.In addition, it is equipped with the short current detection function to automatically protect battery packs without control from the external microcontroller. VDD VDDP VREF VREG 16-cell 6-cell support VDD_SW /CS V16 Voltage Regulator V13 V12 V11 V10 V9 V8 V7 V6 V5 V4 V3 V2 Cell Selection & Cell Balance Switches V15 V14 SCK SDI MCU I/F SDO Control Logic /RES TEST Charger Load Detector Reference Generator V1 FET Driver Short Detector Current Monitor PSENSE RSENSE C_FET D_FET IMON GND CDLY VMON ISM ISP ・Supply voltage ： +7V to +80V ・Operating temperature ： -40℃ to +85℃ ・Package ： QFP44 Application E-assist bicycle N o re q u i re d a d d i t i o na l ex te r n a l d r i ve r I C by d i re c t l y d r i v i n g t h e g a te t e r m i n a l fo r c h a rg e/d i s c h a rg e c o n t ro l . /INTO /PUPIN Cell Voltage Monitor Charge/discharge NMOS-FET is connected high-side Electric bicycle High accuracy voltage / current measurement Battery voltage and current is measured with high accurac・ Voltage    ・ measurement accuracy is so high as ±20mV (Typ.) Equipped with Cell balancing g function Cell-Balancing switch for each cell is equipped and its balancing switch ON-resistance is 6Ω. Low Current consumption Current consumption in the power-down mode is minimized to around zero to reduce especially the load on the battery during long-term storage.  ・ At n o r m a l M o d e : 5 0 µ A ( t y p .)  ・ At p o w e r- s a v e M o d e : 25 µ A ( t y p .)  ・ At p o w e r- d o w n M o d e : 0 .1µ A ( t y p .) Short-currrent detection and protection function B u i l t- i n s h o r t- c i rc u i t d et e c t i o n a n d p ro t e c t i o n fu n c t i o n . I f s h o r t- c i rcu i t i s d e te c te d , M L 523 8 a u to m a t i c a l l y c u t- o f f c h a rg e/d i s c h a rg e F E T fo r s y s te m s a fe t y. Power tool UPS uninterruptible power supply http://www.lapis-semi.com/en * Please note that this is a leaflet, not a data sheet. * Specifications are subject to change without notice. All rights reserved, Copyright © 2017 LAPIS Semiconductor