BA3259HFP_09 ROHM [Rohm], BA3259HFP_09 Datasheet

BA3259HFP_09

Manufacturer Part Number

BA3259HFP_09

Description

Dual-output Secondary Fixed/Variable Output LDO Regulators for Local Power Supplies

Manufacturer

ROHM [Rohm]

Datasheet

1.BA3259HFP_09.pdf (10 pages)

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Secondary LDO Regulators for Local Power Supplies

Dual-output Secondary

Fixed/Variable Output LDO Regulators

for Local Power Supplies

Description

Features

Applications

Product Lineup

Absolute Maximum Ratings

Recommended Operating Conditions

www.rohm.com

BA3259HFP,BA30E00WHFP

BA3259HFP

Applied voltage

Power dissipation

Operating temperature

range

Ambient storage

temperature range

Maximum junction

temperature

BA3259HFP

Input power supply

voltage

3.3 V output current

Variable output current

The BA3259HFP and BA30E00WHFP are 2-output, low-saturation regulators. These units have both a 3.3 V fixed output as well

as a variable output with a voltage accuracy of ±2%, and incorporate an overcurrent protection circuit to prevent IC destruction due

to output shorting along with a TSD (Thermal Shut Down) circuit to protect the IC from thermal destruction caused by overloading.

Available to all commercial devices, such as FPD, TV, and PC sets besides DSP power supplies for DVD and CD sets.

BA3259HFP

BA30E00WHFP

*1 Must not exceed Pd.

*2 Derated at 18.4 mW/°C at Ta>25°C when mounted on a glass epoxy board (70 mm  70 mm  1.6 mm).

1) Output voltage accuracy: ± 2%.

2) Reference voltage accuracy: ± 2%

3) Output current capacity: 1 A (BA3259HFP), 0.6 A (BA30E00WHFP)

4) Ceramic capacitor can be used to prevent output oscillation (BA3259HFP)

6) Low dissipation with two voltage input supported (BA30E00WHFP)

7) Built-in thermal shutdown circuit

8) Built-in overcurrent protection circuit

Part Number

Parameter

Output voltage Vo1

Symbol Min. Typ. Max. Unit

Vcc

Io1

Io2

3.3 V

Symbol

Tjmax

Topr

Tstg

Vcc

4.75

−

−55 to 150

2300

0 to 85

Limit

150

−

Output voltage Vo2

0.8 V to 3.3 V

14.0

Units

°C

1/8

BA30E00WHFP

Input power supply

voltage 1

Input power supply

voltage 2

3.3 V output current

Variable output current

BA30E00WHFP

Applied voltage

Power dissipation

Operating temperature

range

Ambient storage

temperature range

Maximum junction

temperature

Output Current Io1

Parameter

0.6 A max

1 A max

Parameter

Output Current Io2

Symbol

Vcc1

Vcc2

Io1

Io2

0.6 A max

Symbol

Tjmax

1 A max

Topr

Tstg

Vcc

Min. Typ. Max. Unit

4.1

2.8

−

2009.04 - Rev.A

−25 to 105

−55 to 150

2300

Limit

150

No.09026EAT02

−

Package

Vcc1

16.0

HRP5

HRP7

0.6

Units

°C

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BA3259HFP_09 Summary of contents

Page 1

Secondary LDO Regulators for Local Power Supplies Dual-output Secondary Fixed/Variable Output LDO Regulators for Local Power Supplies BA3259HFP,BA30E00WHFP Description The BA3259HFP and BA30E00WHFP are 2-output, low-saturation regulators. These units have both a 3.3 V fixed output as well as a ...

Page 2

BA3259HFP,BA30E00WHFP Electrical Characteristics BA3259HFP (Unless otherwise specified, Ta=25°C, Vcc=5 V, R1=R2=5 k) Parameter Circuit current [3.3 V Output Block] Output voltage 1 Minimum I/O voltage difference 1 Current capability 1 Ripple rejection 1 Input stability 1 Load stability 1 Temperature ...

Page 3

BA3259HFP,BA30E00WHFP BA3259HFP Electrical Characteristics Curves (Unless otherwise specified, Ta=25°C, Vcc=5 V) 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 SUPPLY VOLTAGE：Vcc［V］ Fig.1 Circuit Current (with no load) 4.0 3.5 3.0 2.5 2.0 ...

Page 4

BA3259HFP,BA30E00WHFP BA30E00WHFP Electrical Characteristics Curves (Unless otherwise specified, Ta=25°C, Vcc1=Vcc2=5V) 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 SUPPLY VOLTAGE：Vcc［V］ Fig.13 Circuit Current (with no load) 4.0 3.5 3.0 ...

Page 5

BA3259HFP,BA30E00WHFP Block Diagrams / Standard Example Application Circuits Current Limit Current Limit GND Thermal FIN Shutdown Fig.25 BA3259HFP Block Diagram Pin No. Pin name Function 1 Vcc Power supply pin 2 ADJ Variable output voltage detection pin ...

Page 6

BA3259HFP,BA30E00WHFP Function Explanation 1) Two-input power supply (BA30E00WHFP) The input voltages (Vcc1 and Vcc2) supply power to two outputs (Vo1 and Vo2, respectively). The power dissipation between the input and output pins can be suppressed for each output according to ...

Page 7

BA3259HFP,BA30E00WHFP  Input / Output Equivalent Circuits BA3259HFP Vcc Vo1 Fig.30 BA3259HFP I/O Equivalent Circuits Explanation of external components BA3259HFP 1) Vcc (Pin recommended that a ceramic capacitor with a capacitance of approximately 3.3F is placed between ...

Page 8

BA3259HFP,BA30E00WHFP  Notes for use 1) Absolute maximum ratings An excess in the absolute maximum ratings, such as supply voltage, temperature range of operating conditions, etc., can break down the devices, thus making impossible to identify breaking mode, such as ...

Page 9

BA3259HFP,BA30E00WHFP Part No. Part No. 3259 30E00W HRP5 9.395±0.125 (MAX 9.745 include BURR) 8.82 ± 0.1 1.905±0.1 (5.59 1.2575 S 0.73±0.1 1.72 0.08 S HRP7 9.395±0.125 (MAX 9.745 include BURR) 8.82±0.1 ...

Page 10

No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose ...

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