BA50BC0WT Rohm Semiconductor, BA50BC0WT Datasheet - Page 5

• Manufacturer Part Number: BA50BC0WT
• Description: IC REG LDO 1A 5V SHTDN TO220FP-5
• Manufacturer: Rohm Semiconductor

Specifications of BA50BC0WT

• Regulator Topology: Positive Fixed
• Voltage - Output: 5V
• Voltage - Input: Up to 16V
• Voltage - Dropout (typical): 0.3V @ 500mA
• Number Of Regulators: 1
• Current - Output: 1A (Max)
• Current - Limit (min): 1A
• Operating Temperature: -40°C ~ 105°C
• Mounting Type: Through Hole
• Package / Case: TO-220-5 Full Pack (Straight Leads)
• Number Of Outputs: 1
• Polarity: Positive
• Input Voltage Max: 16 V
• Output Voltage: 5 V
• Output Type: Fixed
• Dropout Voltage (max): 0.5 V at 500 mA
• 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
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Input / Output Equivalent Circuit Diagrams
Thermal Derating Curves
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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.
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).
Pc = (Vcc – Vo)  Io + Vcc  Icca
Vcc
CTL
Power dissipation Pd ≥ Pc
10
25
15
20
5
0
Io ≤ 550 mA (Icca  20 mA)
Io ≤
 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.16
Vcc − Vo
6.0 − 5.0
(1) When using an infinite heat sink.
(2) During IC without heat sink operation.
27k Ω
j-c = 6.25 (°C/W)
j-a = 62.5 (°C/W)
jmax
50
Fig.18
, deterioration or damage may occur. Implement proper thermal designs to ensure that power
31k Ω
2k Ω
75
100
125
°C
Fig.17
]
R2
R1
150
Vcc
5/8
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
0
0
OUT
 TO252-3/TO252-5
1.30
AMBIENT TEMPERATURE：Ta [
* For the BA00BC0WT, connect R1 and
Equation: VOUT = Vc  (R1 + R2) / R1
(Vc = 1.25 V (Typ.))
The recommended R1 value is
approximately 30 k to 150 k.
R2 externally between the C and GND
pins and between the OUT and C pins.
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
75
: Output current
: Load current
TO252-5
100
Technical Note
2010.02 - Rev.B
°C
125
]
150