BA15BC0WT-V5 Rohm Semiconductor, BA15BC0WT-V5 Datasheet - Page 5

• Manufacturer Part Number: BA15BC0WT-V5
• Description: Low Dropout (LDO) Regulators
• Manufacturer: Rohm Semiconductor

Specifications of BA15BC0WT-V5

• Number Of Outputs: 1
• Polarity: Positive
• Input Voltage Max: 16 V
• Output Voltage: 1.5 V
• Output Type: Fixed
• Output Current: 1 A
• Line Regulation: 35 mV
• Load Regulation: 75 mV
• Voltage Regulation Accuracy: 2 %
• Maximum Power Dissipation: 2 W
• Maximum Operating Temperature: + 105 C
• Mounting Style: Through Hole
• Package / Case: TO-220FP(V5)
• Minimum Operating Temperature: - 40 C
• Reference Voltage: 1.28 V
• Lead Free Status / Rohs Status: Details

Thermal Derating Curves
Operation Notes
The power consumption Pc of the IC in the event of shorting (i.e. the Vo and GND pins are shorted) can be obtained from the
following equation:
Pc = Vcc  (Icca + Ishort) (Ishort: short current).
The characteristics of the IC are greatly influenced by the operating temperature. If the temperature exceeds the maximum
junction temperature T
dissipation is within the permissible range in order to prevent instantaneous damage resulting from heat and maintain the
reliability of the IC for long-term operation.
The following method is used to calculate the power consumption Pc (W).
The load current Io is calculated:
Calculation Example:
Vcc = 6.0 V and Vo = 5.0 V at Ta = 85°C
Refer to the above and implement proper thermal designs so that the IC will not be used under excessive power dissipation
conditions under the entire operating temperature range.
 Vcc pin
 GND pin
 CTL pin
Power dissipation Pd ≥ Pc
10
25
20
15
Pc = (Vcc – Vo)  Io + Vcc  Icca
Insert a capacitor (0.33 F approx.) between VCC and GND.
The capacitance will vary depending on the application. Use a suitable capacitance and implement designs with
sufficient margins.
Verify that there is no potential difference between the ground of the application board and the IC.
If there is a potential difference, the set voltage will not be output accurately, resulting in unstable IC operation.
Therefore, lower the impedance by designing the ground pattern as wide and as short as possible.
0
5
Io ≤ 550 mA (Icca  20 mA)
Io ≤
CTL
 TO220FP-3/TO220FP-5/TO220FP-5V5）
0
(1)20.0
(2)2.0
AMBIENT TEMPERATURE：Ta [
0.676 − 6.0  Icca
Pd − Vcc  Icca
25
Fig.20 Input Equivalent Circuit
Vcc − Vo
6.0 − 5.0
(1) When using an infinite heat sink.
(2) During IC without heat sink operation.
j-c = 6.25 (°C/W)
j-a = 62.5 (°C/W)
50
jmax
Fig.18
, deterioration or damage may occur. Implement proper thermal designs to ensure that power
27k Ω
75
31k Ω
100
2k Ω
125
°C
]
150
5/9
ja = 96.2°C/W  −10.4 mW/°C
25°C = 1300 mW  85°C = 676 mW
1.2
0.8
1.6
0.4
2.0
The CTL pin turns on at an operating power supply
voltage of 2.0 V or higher and turns off at 0.8 V or lower.
There is no particular order when turning the power
supply and CTL pins on or off.
0
0
1.30
 TO252-3/TO252-5
AMBIENT TEMPERATURE ： Ta [
25
IC mounted on a ROHM standard board
Board size: 70  70  1.6 mm
Copper foil area: 7  7 mm
TO252-5 ja=96.2 (°C/W)
TO252-3 ja ＝ 104.2 (°C/W)
50
TO252-3
Vcc : Input voltage
Vo
IO
Icca : Circuit current
Fig.19
: Output current
: Load current
75
TO252-5
100
°C
125
]
150