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參數(shù)資料
| 型號： | RT9262 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | HIGH EFFICIENCY, LOW SUPPLY CURRENT, STEP-UP DC/DC CONVERTER |
| 中文描述： | 高效率，低電源電流，升壓型DC / DC變換器 |
| 文件頁數(shù)： | 5/12頁 |
| 文件大?。?/td> | 110K |
| 代理商： | RT9262 |
Preliminary
RT9262/A
DS9262/A-04 August 2002
www.richtek.com
5
Electrical Characteristics
(V
IN
= 1.5V, VDD set to 3.3V, Load Current = 0, T
A
= 25
°
C, unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
Start-UP Voltage
V
ST
I
L
= 1mA
Start-up to I
DD1
>
250
μ
A
--
0.98
1.05
6.5
*
V
Operating VDD Range
V
DD
0.8
--
V
No Load Current I (V
IN
)
Switch-off Current I (VDD)
I
NO LOAD
V
IN
= 1.5V, V
OUT
= 3.3V
I
SWITCH OFF
V
IN
= 6V
I
OFF
CE Pin = 0V, V
IN
= 4.5V
V
REF
Close Loop, VDD = 3.3V
--
47
--
μ
A
μ
A
μ
A
--
17
--
Shutdown Current I (V
IN
)
Feedback Reference Voltage
--
0.1
1
1.225
1.25
1.275
V
Feedback Reference
Voltage for LDO
RT9262
V
REF
Close Loop, VDD = 3.3V
0.843
0.86
0.877
V
LBI Pin Trip Point
RT9262A
VDD = 3.3V
0.843
0.86
0.877
V
Switching Rate
F
S
VDD = 3.3V
--
550
--
KHz
Maximum Duty
D
MAX
VDD = 3.3V
--
92
--
%
LX
ON Resistance
VDD = 3.3V
--
0.25
--
Current Limit Setting
I
LIMIT
VDD = 3.3V
--
2
--
A
EXT ON Resistance to VDD
VDD = 3.3V
--
40
--
EXT ON Resistance to GND
VDD = 3.3V
--
30
--
Line Regulation
V
LINE
V
LOAD
V
IN
= 1.5 ~ 2.5V, I
L
= 1mA
--
10
--
mV/V
Load Regulation
V
IN
= 2.5V, I
L
= 1 ~ 100mA
VDD = 3.3V
--
0.25
--
mV/mA
LDO PMOS ON Resistance RT9262
--
1
1.5
LDO Drop Out Voltage
RT9262
V
DROP
VDD = 3.3V, IL = 100mA
--
70
--
mV
LBO ON Resistance
RT9262A
VDD = 3.3V
--
40
--
CE Pin Trip Level
VDD = 3.3V
0.2
0.8
1.4
V
Temperature Stability for FB, LFB, LBI
T
S
T
SD
T
SD
Guaranteed by Design
--
50
--
ppm/
°
C
°
C
°
C
Thermal Shutdown
Guaranteed by Design
--
165
--
Thermal Shutdown Hysterises
Guaranteed by Design
--
10
--
* Note: The CE pin shall be tied to VDD pin and inhibit to act the ON/OFF state whenever the VDD pin voltage
may reach to 5.5V or above.
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