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參數資料
| 型號： | RT9264 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | HIGH FREQUENCY HIGH EFFICIENCY STEP UP DC/DC CONVERTER |
| 中文描述： | 高頻高效率升壓型DC / DC變換器 |
| 文件頁數： | 4/8頁 |
| 文件大小： | 170K |
| 代理商： | RT9264 |
RT9264
Preliminary
www.richtek-ic.com.tw
4
DS9264-00 December 2001
Absolute Maximum Ratings
z
Supply Voltage
-0.3V to 6V
-0.3V to (VDD + 0.8V)
-0.3V to (VDD + 0.3V)
-0.3V to (VDD + 0.3V)
2.5A
30mA
z
LX Pin Switch Voltage
z
LDO Output Voltage
z
Other I/O Pin Voltages
z
LX Pin Switch Current
z
EXT Pin Driver Current
z
Power Dissipation, P
D
@ T
A
= 25
°
C
SOP-8
Package Thermal Resistance
SOP-8,
θ
JA
z
Operating Junction Temperature
0.625W
160
°
C/W
150
°
C
-65
°
C ~ +150
°
C
z
Storage Temperature Range
Electrical Characteristics
(V
IN
= 3.3V, VDD set to 5V, Load Current = 0, T
A
= 25
°
C, unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
Operating VDD Range
V
DD
1
--
6
V
No Load Current I (V
IN
)
I
NO LOAD
V
IN
= 3.3V, V
OUT
= 5V
--
3
--
mA
Switch-off Current I (VDD)
I
SWITCH OFF
V
IN
= 6V
--
1
--
mA
Shutdown Current I (V
IN
)
Feedback Reference Voltage
I
OFF
CE Pin = 0V, V
IN
= 4.5V
--
0.1
1
μ
A
V
REF
Close Loop, VDD = 3.3V
1.225
1.25
1.275
V
Feedback Reference Voltage for LDO
V
REF
Close Loop, VDD = 3.3V
0.843
0.86
0.877
V
Switching Rate
F
S
VDD = 5V
1.4
--
2.8
MHz
Maximum Duty
D
MAX
VDD = 5V
--
80
--
%
LX
ON Resistance
VDD = 5V
--
0.25
--
Current Limit Setting
I
LIMIT
VDD = 5V
--
2
--
A
EXT ON Resistance to VDD
VDD = 5V
--
30
--
EXT ON Resistance to GND
VDD = 5V
--
20
--
Line Regulation
V
LINE
V
IN
= 3 ~ 4V, I
L
= 1mA
--
20
--
mV/V
Load Regulation
V
LOAD
V
IN
= 3.3V, I
L
= 1 ~ 50mA
--
0.5
--
mV/mA
LDO PMOS ON Resistance
VDD = 5V
--
1
1.5
LDO Drop Out Voltage
V
DROP
VDD = 5V, IL = 100mA
--
70
--
mV
CE Pin Trip Level
VDD = 5V
0.2
0.8
1.4
V
Temperature Stability for FB, LFB, LBI
T
S
Guaranteed by Design
--
50
--
ppm/
°
C
°
C
Thermal Shutdown
T
SD
Guaranteed by Design
--
165
--
Thermal Shutdown Hysterises
T
SD
Guaranteed by Design
--
10
--
°
C
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