RT9266B Просмотр технического описания (PDF) - Richtek Technology
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RT9266B Datasheet PDF : 13 Pages
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RT9266B
Absolute Maximum Ratings
z Supply Voltage ----------------------------------------------------------------------------------------------------- −0.3V to 7V
z LX Pin Switch Voltage -------------------------------------------------------------------------------------------- −0.3V to 6.5V
z Other I/O Pin Voltages ------------------------------------------------------------------------------------------- −0.3V to (VDD + 0.3V)
z LX Pin Switch Current -------------------------------------------------------------------------------------------- 2.5A
z EXT Pin Driver Current -------------------------------------------------------------------------------------------- 200mA
z Package Thermal Resistance
SOT-23-6, θJC ------------------------------------------------------------------------------------------------------ 145°C/W
z Operating Junction Temperature ------------------------------------------------------------------------------- 125°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
Start-UP Voltage
Operating VDD Range
No Load Current I (VIN)
Switch-off Current I (VDD)
Shutdown Current I (VIN)
Feedback Reference Voltage
Switching Frequency
Maximum Duty
LX ON Resistance
Current Limit Setting
Current Limit Delay Time
EXT ON Resistance to VDD
EXT ON Resistance to GND
Line Regulation (refer to VFB)
Load Regulation (refer to VFB)
EN Pin Trip Level
Temperature Stability for Vout
Thermal Shutdown
Thermal Shutdown Hysterises
VST
VDD
INO LOAD
ISWITCH OFF
IOFF
VREF
FS
DMAX
ILIMIT
ΔVLINE
ΔVLOAD
TS
TSD
ΔTSD
IL = 1mA
VDD pin voltage
VIN = 1.5V, VOUT = 3.3V
VIN = 6V
EN Pin = 0V, VIN = 4.5V
Close Loop, VDD = 3.3V
VDD = 3.3V
VDD = 3.3V
VDD = 3.3V
VDD = 3.3V
VDD = 3.3V
VDD = 3.3V
VDD = 3.3V
VIN = 1.5 ~ 2.5V, IL = 50mA
VIN = 2.5V, IL = 1 ~ 100mA
VDD = 3.3V
Min
--
2
--
--
--
1.225
--
--
--
--
--
--
--
--
--
0.4
--
--
--
Typ
0.98
--
150
25
0.01
1.25
550
95
0.35
0.5
300
5
5
12
0.25
0.8
50
165
10
Max Units
1.05
V
6.5
V
--
μA
--
μA
1
μA
1.275 V
--
kHz
--
%
--
Ω
--
A
--
ns
--
Ω
--
Ω
-- mV/V
-- mV/mA
1.2
V
-- ppm/°C
--
°C
--
°C
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DS9266B-09 March 2007
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