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RT9263 Datasheet(PDF) 5 Page - Richtek Technology Corporation

Part No. RT9263
Description  High Efficiency, Low Supply Current, Step-Up DC/DC Converter
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Maker  RICHTEK [Richtek Technology Corporation]
Homepage  http://www.richtek.com
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RT9263 Datasheet(HTML) 5 Page - Richtek Technology Corporation

   
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RT9263
Preliminary
5
DS9263-09
March 2007
www.richtek.com
Absolute Maximum Ratings
Supply Voltage -----------------------------------------------------------------------------------------------------
0.3V to 7V
LX Pin Switch Voltage --------------------------------------------------------------------------------------------
0.3V to (VDD + 0.8V)
Other I/O Pin Voltages -------------------------------------------------------------------------------------------
0.3V to (VDD + 0.3V)
LX Pin Switch Current -------------------------------------------------------------------------------------------- 2.5A
EXT Pin Driver Current -------------------------------------------------------------------------------------------- 30mA
Power Dissipation, PD @ TA = 25
°C
SOT89-5 ------------------------------------------------------------------------------------------------------------- 0.5W
Package Thermal Resistance
SOT89-5,
θJA ---------------------------------------------------------------------------------------------------------------------------------------------------- 300°C/W
Operating Junction Temperature ------------------------------------------------------------------------------- 150
°C
Storage Temperature Range ------------------------------------------------------------------------------------
65°C to +150°C
Electrical Characteristics
(VIN = 1.5V, VDD set to 3.3V, Load Current = 0, TA = 25°C, unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
Start-UP Voltage
VST
IL = 1mA
--
0.98
1.05
V
Operating VDD Range
VDD
Start-up to IDD1 > 250μA
0.8
--
6.5
*
V
No Load Current I (VIN)
INO LOAD
VIN = 1.5V, VOUT = 3.3V
--
47
--
μA
Switch-off Current I (VDD)
ISWITCH OFF VIN = 6V
--
17
--
μA
Shutdown Current I (VIN)
IOFF
EN Pin = 0V, VIN = 4.5V
--
0.1
1
μA
Feedback Reference Voltage
VREF
Close Loop, VDD = 3.3V
1.225
1.25
1.275
V
Switching Rate
FS
VDD = 3.3V
--
550
--
kHz
Maximum Duty
DMAX
VDD = 3.3V
--
92
--
%
LX ON Resistance
VDD = 3.3V
--
0.25
--
Ω
Current Limit Setting
ILIM
VDD = 3.3V
--
2
--
A
EXT ON Resistance to VDD
VDD = 3.3V
--
40
--
Ω
EXT ON Resistance to GND
VDD = 3.3V
--
30
--
Ω
Line Regulation
ΔVLINE
VIN = 1.5 ~ 2.5V, IL = 1mA
--
10
--
mV/V
Load Regulation
ΔVLOAD
VIN = 2.5V, IL = 1 ~ 100mA
--
0.25
--
mV/mA
EN Pin Trip Level
VDD = 3.3V
0.2
0.8
1.4
V
Temperature Stability for FB, LFB, LBI TS
Guaranteed by Design
--
50
--
ppm/
°C
Thermal Shutdown
TSD
Guaranteed by Design
--
165
--
°C
Thermal Shutdown Hysterises
ΔTSD
Guaranteed by Design
--
10
--
°C
* Note: The EN 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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