RT9263 Просмотр технического описания (PDF) - Richtek Technology
Номер в каталоге
Компоненты Описание
производитель
RT9263 Datasheet PDF : 8 Pages
| |||
Preliminary
RT9263
Absolute Maximum Ratings
z Supply Voltage ----------------------------------------------------------------------------------------------------- −0.3V to 7V
z LX Pin Switch Voltage -------------------------------------------------------------------------------------------- −0.3V to (VDD + 0.8V)
z Other I/O Pin Voltages ------------------------------------------------------------------------------------------- −0.3V to (VDD + 0.3V)
z LX Pin Switch Current -------------------------------------------------------------------------------------------- 2.5A
z EXT Pin Driver Current -------------------------------------------------------------------------------------------- 30mA
z Power Dissipation, PD @ TA = 25°C
SOT89-5 ------------------------------------------------------------------------------------------------------------- 0.5W
z Package Thermal Resistance
SOT89-5, θJA ---------------------------------------------------------------------------------------------------------------------------------------------------- 300°C/W
z Operating Junction Temperature ------------------------------------------------------------------------------- 150°C
z 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
Operating VDD Range
VDD
Start-up to IDD1 > 250μA
No Load Current I (VIN)
INO LOAD VIN = 1.5V, VOUT = 3.3V
Switch-off Current I (VDD)
ISWITCH OFF VIN = 6V
Shutdown Current I (VIN)
IOFF
EN Pin = 0V, VIN = 4.5V
Feedback Reference Voltage
VREF
Close Loop, VDD = 3.3V
Switching Rate
FS
VDD = 3.3V
Maximum Duty
DMAX
VDD = 3.3V
LX ON Resistance
VDD = 3.3V
Current Limit Setting
ILIM
VDD = 3.3V
EXT ON Resistance to VDD
VDD = 3.3V
EXT ON Resistance to GND
VDD = 3.3V
Line Regulation
ΔVLINE
VIN = 1.5 ~ 2.5V, IL = 1mA
Load Regulation
ΔVLOAD
VIN = 2.5V, IL = 1 ~ 100mA
EN Pin Trip Level
VDD = 3.3V
Temperature Stability for FB, LFB, LBI TS
Guaranteed by Design
Thermal Shutdown
TSD
Guaranteed by Design
Thermal Shutdown Hysterises
ΔTSD
Guaranteed by Design
--
0.8
--
--
--
1.225
--
--
--
--
--
--
--
--
0.2
--
--
--
0.98
--
47
17
0.1
1.25
550
92
0.25
2
40
30
10
0.25
0.8
50
165
10
1.05 V
6.5 *
V
--
μA
--
μA
1
μA
1.275 V
-- kHz
--
%
--
Ω
--
A
--
Ω
--
Ω
-- mV/V
-- mV/mA
1.4
V
-- ppm/°C
--
°C
--
°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.
DS9263-09 March 2007
www.richtek.com
5
Share Link: 