BA15DD0WHFP-TR Rohm Semiconductor, BA15DD0WHFP-TR Datasheet - Page 8

• Manufacturer Part Number: BA15DD0WHFP-TR
• Description: IC REG LDO 1.5V 2A HRP5
• Manufacturer: Rohm Semiconductor
• Series: -r

Specifications of BA15DD0WHFP-TR

• Regulator Topology: Positive Fixed
• Voltage - Output: 1.5V
• Voltage - Input: 3 V ~ 25 V
• Voltage - Dropout (typical): 0.45V @ 2A
• Number Of Regulators: 1
• Current - Output: 2A (Max)
• Current - Limit (min): -
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: *
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

●Peripheral Circuit Considerations
●Vo Terminal
BA□□DD0T
BA□□DD0WT
© 2011 ROHM Co., Ltd. All rights reserved.
www.rohm.com
IC
・Vcc Terminal
・GND Terminal
・CTL Terminal
Please attach an anti-oscillation capacitor between V
due to factors such as temperature changes, making it impossible to completely stop oscillations. Please use a tantalum
capacitor or aluminum electrolysis capacitor with favorable characteristics and small internal series resistance (ESR) even at
low temperatures. The output fluctuates regardless of whether the ESR is large or small. Please use the IC within the stable
operating region while referring to the ESR characteristics reference data shown in Figs.32 through 34. In applications where
there are sudden load fluctuations, the use of a capacitor with large capacitance is recommended.
Fig.32 Output Equivalent Circuit
Please attach a capacitor (greater than 0.33µF) between the Vcc and GND.
The capacitance values will differ depending on the application, so please take this into account when configuring the terminal.
Please be sure to keep the set ground and IC ground at the same potential level so that a potential difference does not
arise between them.
If a potential difference arises between the set ground and the IC ground, the preset voltage will not be outputted, causing
the system to become unstable. Therefore, please reduce the impedance by making the ground patterns as wide as
possible and by reducing the distance between the set ground and the IC ground as much as possible.
The CTL terminal is turned ON at 2.0V and higher and OFF at 0.8V and lower within the operating power supply voltage range.
The power supply and the CTL terminal may be started up and shut down in any order without problems.
Series
Series
,BA□□CC0T
,BA□□DD0HFP
OUT
22μF
Series
,BA□□CC0FP
Series
100
10
0.1
1
0
,BA□□CC0WT
Fig.33 ESR-Io Characteristics
200
OUTPUT CURRENT：lo(mA)
(BA□□CC0)
Stable operating region
Unstable operating region
400
Unstable operating region
Series
cc
600
and GND. The capacitance of the capacitor may significantly change
Series
8/11
800
,BA□□CC0WFP
1000
10
0.1
100
1
1
1
Series
Fig.34 ESR vs Io Characteristics
10
Unstable operating region
OUTPUT CURRENT：lo(mA)
Stable operating region
(B A□□DD0)
100
Technical Note
Unstable operating region
2011.03 - Rev.C
1000
10000