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Overview| Key Feature 1| Key Feature 2| Key Feature 3| Lineup
Overview
ROHM's variable output secondary LDO regulators are designed to provide localized power to a variety of controllers and devices, including CPUs and DSPs. 9 models are offered in different input voltages (7V/10V/15V) and output currents (0.3A/0.5A/1.0A/1.5A). In addition, a backside metal fin is attached that dissipates heat through the board, resulting in high package power in a compact form factor equivalent in size to the SOP8. Additional features include a built-in MOSFET, soft start function, high-speed load response, and compatibility with compact ceramic capacitors. |
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| Key Features |
- 3 different max. input voltage levels: 7V, 10V, and 15V
- 4 output currents: 0.3A, 0.5A, 1.0A, and 1.5A
- ±1% reference voltage accuracy
- Overcurrent protection circuit (OCP)
- Thermal shutdown (TSD)
- EN terminal included
- Variable output type
- Compact HTSOP-J8 package
- Compatible with 1µF ceramic capacitors
- Integrated soft start function
- Short matrix protection function
- Entire series pin-compatible
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Product Lineup
| Output Current |
Max. Input Voltage |
| 7V |
10V |
15V |
| 0.3A |
- |
BD00HA3WEFJ |
BD00GA3WEFJ |
| 0.5A |
☆BD00IA5WEFJ |
BD00HA5WEFJ |
BD00GA5WEFJ |
| 1.0A |
☆BD00IC0WEFJ |
BD00HC0WEFJ |
BD00GC0WEFJ |
| 1.5A |
- |
BD00HC5WEFJ |
- |
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☆:Under Development |
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Key Feature 1 : Backside metal fin enables high heat dissipation in a compact form factor
| The new HTSOP-J8 package (SOP8-equivalent) is roughly half the size of conventional TO252-5 packages but provides high package power due to a backside metal fin, eliminating the need for thermal countermeasures such as heat sinks. |
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Key Feature 2 : Ceramic capacitor compatibility reduces mounting area
Conventional LDO regulators exhibit unstable operation when using small capacitors with low ESR due to insufficient phase margin, and therefore require large electrolytic capacitors at the output. Conversely, ROHM utilizes proprietary circuit technology and advanced circuit processes to develop LDO regulators compatible with 1µF ceramic capacitors, contributing to set miniaturization and longer life. |
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Key Feature 3 : Pin-compatible configurations (entire series) enable flexible response to design changes
ROHM's new lineup of secondary LDO regulators - offered in a compact, high-power HTSOP package - consist of 9 models in different input voltages and output currents. The entire lineup is pin-compatible, making regulator replacement easy due to specification changes during set development. |
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Lineup
300mA Variable Output Secondary LDO Regulators for Local Power Supplies
| Part No. |
Output
Voltage
(V) |
Output
Voltage
Accuracy
(%) |
Output
Current
(A) |
Voltage
Resistance
(V) |
Ripple
Rejection
(dB) |
Bias
Current
(mA) |
Input
Voltage
Difference
(V) |
Load
Regulation
(mV) |
Input
Capacitor
(µF) |
Output
Capacitor
(µF) |
Shutdown
Switch |
Protection
Circuits |
Package |
New
BD00HA3WEFJ |
Variable
1.5 to 7.0 |
±1.0 |
0.3 |
10 |
60
(f=100Hz,
50mVpp,
Io=0A) |
0.6 |
0.9
(lo=
300mA) |
25
(lo=
0 to
300mA) |
1.0 |
1.0 |
Yes |
Overcurrent/
Thermal
Shutdown |
HTSOP-J8 |
New
BD00GA3WEFJ |
Variable
1.5 to 13.0 |
±1.0 |
0.3 |
15 |
60
(f=100Hz,
50mVpp,
Io=0A) |
0.6 |
0.9
(lo=
300mA) |
25
(lo=
0 to
300mA) |
1.0 |
1.0 |
Yes |
Overcurrent/
Thermal
Shutdown |
HTSOP-J8 |
500mA Variable Output Secondary LDO Regulators for Local Power Supplies
| Part No. |
Output
Voltage
(V) |
Output
Voltage
Accuracy
(%) |
Output
Current
(A) |
Voltage
Resistance
(V) |
Ripple
Rejection
(dB) |
Bias
Current
(mA) |
Input
Voltage
Difference
(V) |
Load
Regulation
(mV) |
Input
Capacitor
(µF) |
Output
Capacitor
(µF) |
Shutdown
Switch |
Protection
Circuits |
Package |
| ☆BD00IA5WEFJ |
Variable
0.8 to 4.5 |
±1.0 |
0.5 |
7 |
60
(f=100Hz,
50mVpp,
Io=0A) |
0.3 |
0.6
(lo=
0.5A) |
25
(lo=
0 to
500mA) |
1.0 |
1.0 |
Yes |
Overcurrent/
Thermal
Shutdown |
HTSOP-J8 |
New
BD00HA5WEFJ |
Variable
1.5 to 7.0 |
±1.0 |
0.5 |
10 |
60
(f=100Hz,
50mVpp,
Io=0A) |
0.6 |
0.9
(lo=
0.5A) |
25
(lo=
0 to
500mA) |
1.0 |
1.0 |
Yes |
Overcurrent/
Thermal
Shutdown |
HTSOP-J8 |
New
BD00GA5WEFJ |
Variable
1.5 to 13.0 |
±1.0 |
0.5 |
15 |
60
(f=100Hz,
50mVpp,
Io=0A) |
0.6 |
0.9
(lo=
0.5A) |
25
(lo=
0 to
500mA) |
1.0 |
1.0 |
Yes |
Overcurrent/
Thermal
Shutdown |
HTSOP-J8 |
☆ : Under Development
1A Variable Output Secondary LDO Regulators for Local Power Supplies
| Part No. |
Output
Voltage
(V) |
Output
Voltage
Accuracy
(%) |
Output
Current
(A) |
Voltage
Resistance
(V) |
Ripple
Rejection
(dB) |
Bias
Current
(mA) |
Input
Voltage
Difference
(V) |
Load
Regulation
(mV) |
Input
Capacitor
(µF) |
Output
Capacitor
(µF) |
Shutdown
Switch |
Protection
Circuits |
Package |
| ☆BD00IC0WEFJ |
Variable
0.8 to 4.5 |
±1.0 |
1.0 |
7 |
60
(f=100Hz,
50mVpp,
Io=0A) |
0.3 |
0.6
(lo=
1A) |
25
(lo=
0 to
1A) |
1.0 |
1.0 |
Yes |
Overcurrent/
Thermal
Shutdown |
HTSOP-J8 |
New
BD00HC0WEFJ |
Variable
0.8 to 7.0 |
±1.0 |
1.0 |
10 |
60
(f=100Hz,
50mVpp,
Io=0A) |
0.6 |
0.9
(lo=
1A) |
25
(lo=
0 to
1A) |
1.0 |
1.0 |
Yes |
Overcurrent/
Thermal
Shutdown |
HTSOP-J8 |
New
BD00GC0WEFJ |
Variable
1.5 to 13.0 |
±1.0 |
1.0 |
15 |
60
(f=100Hz,
50mVpp,
Io=0A) |
0.6 |
0.9
(lo=
1A) |
25
(lo=
0 to
1A) |
1.0 |
1.0 |
Yes |
Overcurrent/
Thermal
Shutdown |
HTSOP-J8 |
☆ : Under Development
1.5A Variable Output Secondary LDO Regulators for Local Power Supplies
| Part No. |
Output
Voltage
(V) |
Output
Voltage
Accuracy
(%) |
Output
Current
(A) |
Voltage
Resistance
(V) |
Ripple
Rejection
(dB) |
Bias
Current
(mA) |
Input
Voltage
Difference
(V) |
Load
Regulation
(mV) |
Input
Capacitor
(µF) |
Output
Capacitor
(µF) |
Shutdown
Switch |
Protection
Circuits |
Package |
New
BD00HC5WEFJ |
Variable
1.5 to 7.0 |
±1.0 |
1.5 |
10 |
60
(f=100Hz,
50mVpp,
Io=0A) |
0.6 |
0.9
(lo=
1.5A) |
25
(lo=
0 to
1.5A) |
1.0 |
1.0 |
Yes |
Overcurrent/
Thermal
Shutdown |
HTSOP-J8 |
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