Cherry Semiconductor CS387H, CS386H, CS3351YDR14, CS3351YD14, CS3341YDR14 Datasheet

1

Features

■ Drives NPN Darlington

■ Short Circuit Protection

■ 80V Load Dump

■ Temperature Compensated

Regulation Voltage

■ Shorted Field Protection

Duty Cycle, Self Clearing

Package Options

CS3341/3351/386/387

Alternator Voltage Regulator

Darlington Driver

CS3341/51
CS386/387

Description

The CS3341/3351/386/387 integral
alternator regulator integrated cir­cuit provides the voltage regulation
for automotive, 3-phase alternators.

It drives an external power
Darlington for control of the alter­nator field current. In the event of a
charge fault, a lamp output pin is

provided to drive an external dar­lington transistor capable of switch­ing on a fault indicator lamp. An
overvoltage or no STATOR signal
condition activates the lamp output.

The CS3341 and CS3351 are avail­able in SO14 packages. The CS386
and CS387 are available as Flip Chips.

Block Diagram

Absolute Maximum Ratings

Storage Temperature Range .....................................................-55°C to +165°C

Junction Temperature Range....................................................-40°C to +150°C

Continuous Supply..........................................................................................27V

I

CC

Load Dump .........................................................................................400 mA

Lead Temperature Soldering

Reflow (SMD styles only)............60 sec. max above 183°C, 230°C peak

DD

Gnd

NC

OSC

Lamp

NC
NC

SC
NC
V

CC

Sense

IGN

STATOR
NC

14 Lead SO

Flip Chip

CS3341/51

CS386/387

A Company

®

Rev. 4/15/99

Cherry Semiconductor Corporation

2000 South County Trail, East Greenwich, RI 02818

Tel: [phone] Fax: [phone]

Email: [e-mail]

Web Site: www.cherry-semi.com

V

CC

ENABLE

IGN

Series

Regulator

Load Dump

Detection and

VSUP

Protection

1

Sense

LAMP

+

–

+
–

VREG

+
–

VHV

R

RS Flop

Set

Dominate

VSUP

OSC

Lamp

Indicator

S

Q

R

VSUP

OSC

Device
Driver

Gnd

STATOR

Power Up

STATOR

Timer

DELAY

ENABLE

SC

Note:
CS-3341/CS-387 Disconnected
CS-3351/CS-386 Connected

STATOR

2

Electrical Characteristics: CS3341/51: -40°C < TA< 125°C; -40°C < TJ< 150°C, 9V ≤ VCC≤ 17V;

unless otherwise specified

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

CS3341/3351/386/387

■ Supply

Supply Current Enabled – 12 25 mA
Supply Current Disabled – 50 µA

■ Driver Stage

Device Driver – – –
Output High Current VDD= 1.2V -10 -6 -4 mA
Output Low Voltage IOL= 25µA – 0.35 V
Minimum ON Time 200 µs
Minimum Duty Cycle – 6 10 %
Short Circuit Duty Cycle 1 5 %
Field Switch Turn On

Rise Time 30 90 µs
Fall Time 30 90 µs

■ Stator

Input High Voltage 10 V
Input Low Voltage – 6 V
Stator Time Out High to Low 6 100 600 ms
Stator Power-Up Input High CS3351/386 only 10 – V
Stator Power-Up Input Low CS3351/386 only – 6 V

■ Lamp

Output High Current V

LAMP

@ 3V – 50 µA

Output Low Voltage I

LAMP

@ 30mA – 0.35 V

■ Ignition

Input High Voltage ICC> 1mA 1.8 – V
Input Low Voltage ICC< 100µA – 0.5 V

■ Oscillator

Oscillator Frequency C

OSC

= 0.22µF 65 325 Hz

Rise Time/Fall Time C

OSC

= 0.22µF 17 – –

Oscillator High Threshold C

OSC

= 0.22µF – 6 V

■ Battery Sense

Input Current -10 +10 µA
Regulation Voltage @25°C, R1= 100kΩ, R2= 50kΩ 13.5 16.0 V
Proportional Control 0.050 0.400 V
High Voltage V

High Voltage

@ Lamp On 1.083 1.190

Threshold Ratio V

Regulation

@ 50% Duty Cycle

High Voltage Hysteresis 0.020 0.600 V