mc33348d ON Semiconductor, mc33348d Datasheet
mc33348d
Related parts for mc33348d
mc33348d Summary of contents
Page 1
Lithium Battery Protection Circuit for One Cell Battery Packs The MC33348 is a monolithic lithium battery protection circuit that is designed to enhance the useful operating life of a one cell rechargeable battery pack. Cell protection features consist of internally ...
Page 2
... MC33348D–2 MC33348D–3 4. 300 300 300 300 MC33348D–4 MC33348D–5 4. MC33348D–6 NOTE: Additional threshold limit options can be made available. Consult factory for information. MAXIMUM RATINGS Ratings Input Voltage (Measured with Respect to Ground, Pin 3) Cell Voltage (Pin 1) ...
Page 3
ELECTRICAL CHARACTERISTICS ( 4 for min/max values the operating junction temperature range that applies (Note 1), unless otherwise noted.) Characteristic VOLTAGE SENSING Cell Charging Cutoff (Pin 1 to Pin ...
Page 4
Figure 1. Charge and Discharge Threshold Voltage Change versus Temperature 1.2 0.8 Maximum Threshold Charge Limits 0.4 0 Typical Threshold Change Typical Threshold Change –0.4 –0.8 –1.2 –40 – AMBIENT TEMPERATURE ( C) Figure ...
Page 5
PROTECTION CIRCUIT OPERATING MODE TABLE Input Conditions Cell Status CELL CHARGING/DISCHARGING Storage or Nominal Operation: Both Charge MOSFET Q1 and Discharge MOSFET Q2 are on. No current or voltage faults The battery pack is available for charging or discharging. CELL ...
Page 6
Cell Voltage 1 Cell Ground 3 Test 2 Charge Pump Components mandatory. Refer to the Battery Pack Application text. Pin Symbol 1 Cell Voltage This input is connected to the positive terminal of the cell for voltage ...
Page 7
INTRODUCTION The insatiable demand for smaller lightweight portable electronic equipment has dramatically increased the requirements of battery performance. Batteries are expected to have higher energy densities, superior cycle life, be safe in operation and environmentally friendly. To address these high ...
Page 8
As the load eventually depletes the battery pack charge, the Cell Voltage Detector will sense an undervoltage fault condition when the cell falls below the designed undervoltage limit. After three consecutive faults are detected, discharge MOSFET Q2 is turned off, ...
Page 9
As previously stated in the voltage sensing operating description, charge MOSFET Q1 is held off during an overvoltage fault condition. When this condition is present, the discharge current limit protection function is internally disabled. This is required, since the voltage ...
Page 10
0. 0. MC33348 OUTLINE DIMENSIONS D SUFFIX PLASTIC PACKAGE CASE 751–05 (SO–8) ISSUE ...
Page 11
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of ...
Page 12
How to reach us: USA / EUROPE / Locations Not Listed: Motorola Literature Distribution; P.O. Box 5405, Denver, Colorado 80217. 1–303–675–2140 or 1–800–441–2447 Customer Focus Center: 1–800–521–6274 Mfax : RMFAX0@email.sps.mot.com – TOUCHTONE 1–602–244–6609 Motorola Fax Back System – US & ...