參數(shù)資料
型號： BA18BC0FP
元件分類： 固定正電壓單路輸出LDO穩(wěn)壓器
英文描述： 1.8 V FIXED POSITIVE LDO REGULATOR, PSSO2
封裝： ROHS COMPLIANT, TO-252, 3 PIN
文件頁數(shù)： 6/10頁
文件大?。?/td> 436K
代理商： BA18BC0FP
BA□□BC0 Series,BA□□BC0W Series,BA00BC0W Series
Technical Note
5/8
www.rohm.com
2009.04 - Rev.A
2009 ROHM Co., Ltd. All rights reserved.
Input / Output Equivalent Circuit Diagrams
Thermal Derating Curves
TO220FP-3/TO220FP-5/TO220FP-5V5）
TO252-3/TO252-5
Fig.18
Fig.19
The characteristics of the IC are greatly influenced by the operating temperature. If the temperature exceeds the maximum
junction temperature Tjmax, deterioration or damage may occur. Implement proper thermal designs to ensure that power
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).
Pc = (Vcc – Vo)
Io + Vcc Icca
Power dissipation Pd ≥ Pc
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).
0
15
25
20
10
5
25
50
75
125
150
100
0
AMBIENT TEMPERATURE：Ta [°C]
(1)20.0
(2)2.0
(2) During IC without heat sink operation.
j-a = 62.5 (°C/W)
(1) When using an infinite heat sink.
j-c = 6.25 (°C/W)
P
O
W
E
R
D
IS
S
IPAT
IO
N
：
Pd
[W
]
ja = 96.2°C/W → 10.4 mW/°C
25°C = 1300 mW → 85°C = 676 mW
31kΩ
2kΩ
27kΩ
CTL
Vcc
R2
R1
Vcc
OUT
Fig.16
Fig.17
Vcc : Input voltage
Vo
: Output current
IO
: Load current
Icca : Circuit current
* For the BA00BC0WT, connect R1 and
R2 externally between the C and GND
pins and between the OUT and C pins.
0
1.2
2.0
1.6
0.8
0.4
25
50
75
125
150
100
0
AMBIENT TEMPERATURE：Ta [°C]
1.30
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)
PO
W
E
R
DI
D
IP
A
T
IO
N
：
P
d[W
]
TO252-5
TO252-3
Equation: VOUT = Vc
(R1 + R2) / R1
(Vc = 1.25 V (Typ.))
The recommended R1 value is
approximately 30 k
to 150 k.
Io ≤
Pd Vcc
Icca
Vcc Vo
0.676 6.0
Icca
6.0 5.0
Io ≤ 550 mA (Icca
20 mA)
相關(guān)PDF資料
PDF描述
BA00BC0WFP 1.5 V-12 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PSSO4
BA00BC0WT 1.5 V-12 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.5 V DROPOUT, SFM5
BA18BC0WFP 1.8 V FIXED POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PSSO4
BA18BC0WT-V5 1.8 V FIXED POSITIVE LDO REGULATOR, ZFM5
BA00BC0WT-V5 1.5 V-12 V ADJUSTABLE POSITIVE LDO REGULATOR, 0.5 V DROPOUT, ZFM5
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
BA18BC0FP-E1 功能描述:低壓差穩(wěn)壓器 - LDO VOLTAGE REGULATOR RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20
BA18BC0FP-E2 功能描述:低壓差穩(wěn)壓器 - LDO IC LDO 1.8V 1A RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20
BA18BC0T 功能描述:低壓差穩(wěn)壓器 - LDO IC LDO 1A 1.8V RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20
BA18BC0WFP 制造商:ROHM 制造商全稱:Rohm 功能描述:1.0A Low-Dropout Voltage Regulator with Shut down Switch
BA18BC0WFP-E2 功能描述:低壓差穩(wěn)壓器 - LDO REG 1.8V 1A RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20
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