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參數(shù)資料
| 型號(hào)： | TB62731FUG |
| 廠商： | Toshiba Corporation |
| 元件分類： | LED驅(qū)動(dòng)器 |
| 英文描述： | Step-up DC-DC Converter for White LED Driver |
| 中文描述： | 升壓型DC - DC轉(zhuǎn)換器，用于白光LED驅(qū)動(dòng)器 |
| 文件頁數(shù)： | 4/20頁 |
| 文件大小： | 250K |
| 代理商： | TB62731FUG |
TB62731FUG
2006-06-14
4
Electrical Characteristics (unless otherwise specified,
Ta
=
40~85°C, V
CC
=
3.0~5.5 V)
Characteristics
Symbol
Test
circuit
Test condition
Min
Typ.
Max
Unit
Supply voltage
V
CC
3.0
5.5
V
Current consumption at operation
I
CC
(ON)
V
CC
=
3.6 V
0.6
0.9
mA
Current consumption at standby
I
CC
(SHDN)
SHDN
=
0 V
0.5
1.0
μ
A
SHDN pin current
I_SHDN
SHDN
=
V
CC
,
Built-in pull-down resistor
I (A)
<
270 mA,
Including detected resistance
4.2
7
μ
A
Internal MOS transistor on-resistance
Ron
2.0
2.5
Internal MOS transistor switching
frequency
f
OSC
275
350
425
kHz
Pin A voltage
V
o
(A)
28
V
Pin A current
I
o
(A)
210
240
270
mA
Pin A leakage current
I
oz
(A)
0.5
1
μ
A
Set LED current (mean)
I
o
V
CC
=
3.2~4.2 V,
R_sens
=
1.8
T
opr
=
25°C
(Note 1)
17.6
20
22.4
mA
Pin K derating start ambient
temperature
Tdel
Equivalent to R_sens
=
1.8
,
L
=
4.7
μ
H, V
O
=
16 V
45
(Note 2)
°C
Note 1: Due to operation of the temperature derating function, measure when Ta
=
25
°
C.
Note that fluctuation in R_sens resistors is not included in the specified value.
I
o
may be different from the specified value due to the relation between the inductor value and load.
Note 2: This rating is guaranteed by the design.
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