Cherry Semiconductor CS8361YT7, CS8361YN16, CS8361YDWR20, CS8361YDWFR16, CS8361YDWF16 Datasheet

1

Features

■ 2 Regulated Outputs

Standby Output 5V

±2%; 100mA

Tracking Output 5V;

250mA

■ Low Dropout Voltage

(0.4V at rated current)

■ RESET Option

■ ENABLE Option

■ Low Quiescent Current

■ Protection Features

Independent Thermal

Shutdown
Short Circuit
60V Load Dump
Reverse Battery

Package Options

7L TO-220

CS8361

5V Dual Micropower Low Dropout

Regulator with ENABLE and RESET

CS8361

Block Diagram

Description

7L D2PAK

1

16 Lead PDIP & SOIC Wide

(internally fused leads)

NC

NC

NC

NC

NC

NC

V

IN

Gnd
Gnd

Gnd
Gnd

V

TRK

Adj

ENABLE

RESET

V

STBY

1. V

STBY

2. V

IN

3. V

TRK

4. Gnd

5. Adj

6. ENABLE

7. RESET

Also available in 20 Lead SOIC Wide.
Consult factory for 20 Lead PSOP .

* Consult factory for positive ENABLE option.

Rev. 5/4/99

The CS8361 is a precision micro­power dual voltage regulator with

and .

The 5V standby output is accurate
within ±2% while supplying loads
of 100mA and has a typical
dropout voltage of 400mV.
Quiescent current is low, typically
140µA with a 300µA load. The
active output monitors the
5V standby output and holds
the line low during power­up and regulator dropout condi­tions. The circuit includes
hysteresis and is guaranteed to
operate correctly with 1V on the
standby output.

The second output tracks the 5V
standby output through an external
adjust lead, and can supply loads
of 250mA with a typical dropout
voltage of 400mV. The logic level

lead is used to control

this tracking regulator output.

Both outputs are protected against
overvoltage, short circuit, reverse
battery and overtemperature condi­tions. The robustness and low qui­escent current of the CS8361 makes
it not only well suited for automo­tive microprocessor applications,
but for any battery powered micro­processor applications.

ENABLE

RESET

RESET

RESET

RESETENABLE

Cherry Semiconductor Corporation

2000 South County Trail, East Greenwich, RI 02818

Tel: [phone] Fax: [phone]

Email: [e-mail]

Web Site: www.cherry-semi.com

A Company

®

V

IN

Overvoltage

Shutdown

OVSD

Current

Limit

Bandgap

BG

BG

+

–

RESET

V

STBY

5V,100mA,2%

1

V

IN

Thermal

Shutdown

ENABLE

Gnd

–

+

TSD

TSD

RESET

BG

OVSD

V

TRK

Current

Limit

–

+

V

STANDBY

OVSD

TSD

+

–

250mA

Adj

RESET

1

2

Electrical Characteristics: 6V ² V

IN

² 26V, I

OUT1

= I

OUT2

= 100µA, -40¡C ² TA ²+125¡C, -40¡C ²TJ² +150¡C,

unless otherwise specified.

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

CS8361

Absolute Maximum Ratings

Supply Voltage, V

IN

.....................................................................................................................................................-16V to 26V

Positive Transient Input Voltage, tr > 1ms.............................................................................................................................60V

Negative Transient Input Voltage, T < 100ms, 1% Duty Cycle..........................................................................................-50V

Input Voltage Range ( , ) ...............................................................................................................-0.3V to 10V

Junction Temperature...........................................................................................................................................-40¡C to +150¡C

Storage Temperature Range................................................................................................................................-55¡C to +150¡C

ESD Susceptibility (Human Body Model)..............................................................................................................................2kV

Lead Temperature Soldering

Wave Solder (through hole styles only) .....................................................................................10 sec. max, 260¡C peak

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

RESETENABLE

■ Tracking Output (V

TRK

)

V

STBY

Ð V

TRK

, 6V ² VIN² 26V -25 +25 mV

V

TRK

Tracking Error 100µA ² I

TRK

² 250mA (note 1)

Adjust Pin Current, I

Adj

Loop in Regulation 1.5 5 µA

Line Regulation 6V ² VIN² 26V (note 1) 5 50 mV

Load Regulation 100µA ² I

TRK

² 250mA (note 1) 5 50 mV

Dropout Voltage (VINÐ V

TRK

) I

TRK

= 100µA 100 150 mV

I

TRK

= 250mA 400 700 mV

Current Limit VIN= 12V, V

TRK

= 4.5 275 500 mA

Quiescent Current VIN= 12V, I

TRK

= 250mA 25 50 mA

No Load on V

STBY

Reverse Current V

TRK

= 5V, VIN= 0V 200 1500 µA

Ripple Rejection f = 120Hz, I

TRK

= 250mA 60 70 dB

7V ² VIN² 17V

■ Standby Output (V

STBY

)

Output Voltage, V

STBY

6V ² VIN² 26V 4.90 5.00 5.10 V
100µA ² I

STBY

² 100mA

Line Regulation 6V ² VIN² 26V 5 50 mV

Load Regulation 100µA ² I

STBY

² 100mA 5 50 mV

Dropout Voltage (VINÐ V

STBY

) I

STBY

= 100µA 100 150 mV

I

STBY

= 100mA 400 600 mV

Current Limit VIN= 12V, V

STBY

= 4.5V 125 200 mA

Short Circuit Current VIN= 12V, V

STBY

= 0V 10 100 mA

Quiescent Current V

IN

= 12V, I

STBY

= 100mA 10 20 mA

I

TRK

= 0mA

V

IN

= 12V, I

STBY

= 300µA 140 200 µA

I

TRK

= 0mA

Reverse Current V

STBY

= 5V, VIN= 0V 100 200 µA

Ripple Rejection f = 120Hz, I

STBY

= 100mA 60 70 dB

7V ² VIN² 17V

Note 1: V

TRK

connected to Adj lead. V

TRK

can be set to higher values by using an external resistor divider.