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MC33340

Motorola
Part Number MC33340
Manufacturer Motorola
Description BATTERY FAST CHARGE CONTROLLER
Published Aug 28, 2005
Detailed Description Order this document by MC33340/D Advance Information Battery Fast Charge Controller The MC33340 is a monolithic control...
Datasheet PDF File MC33340 PDF File

MC33340
MC33340

Overview
Order this document by MC33340/D Advance Information Battery Fast Charge Controller The MC33340 is a monolithic control IC that is specifically designed as a fast charge controller for Nickel Cadmium (NiCd) and Nickel Metal Hydride (NiMH) batteries.
This device features negative slope voltage detection as the primary means for fast charge termination.
Accurate detection is ensured by an output that momentarily interrupts the charge current for precise voltage sampling.
An additional secondary backup termination method can be selected that consists of either a programmable time or temperature limit.
Protective features include battery over and undervoltage detection, latched over temperature detection, and power supply input undervoltage lockout with hysteresis.
Provisions for entering a rapid test mode are available to enhance end product testing.
This device is available in an economical 8–lead surface mount package.
• Negative Slope Voltage Detection with 4.
0 mV Sensitivity MC33340 BATTERY FAST CHARGE CONTROLLER SEMICONDUCTOR TECHNICAL DATA • • • • • • • • Accurate Zero Current Battery Voltage Sensing High Noise Immunity with Synchronous VFC/Logic Programmable 1 to 4 Hour Fast Charge Time Limit Programmable Over/Under Temperature Detection Battery Over and Undervoltage Fast Charge Protection Rapid System Test Mode Power Supply Input Undervoltage Lockout with Hysteresis Operating Voltage Range of 3.
0 V to 18 V 8 1 8 1 P SUFFIX PLASTIC PACKAGE CASE 626 Simplified Block Diagram D SUFFIX PLASTIC PACKAGE CASE 751 (SO–8) Regulator DC Input VCC Undervoltage Lockout 8 Internal Bias Vsen 1 Voltage to Frequency Converter Ck High Battery Detect Low F/V VCC Over Temp Latch Battery Pack Temp Detect Under t1 t1/Tref High 7 t2/Tsen 6 t3 t3/Tref Low 5 VCC PIN CONNECTIONS Vsen Input 1 Vsen Gate Output 2 Fast/Trickle Output 3 Gnd 4 8 VCC 7 t1/Tref High 6 t2/Tsen 5 t3/Tref Low (Top View) R Over Q R S Vsen Gate 2 3 Fast/ Trickle –∆V Detect Counter Timer t2 Vsen Ga...


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