RT9262 Просмотр технического описания (PDF) - Richtek Technology
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RT9262 Datasheet PDF : 10 Pages
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RT9262/A
Preliminary
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
Feedback Reference
Voltage for LDO
RT9262
VST
IL = 1mA
VDD
Start-up to IDD1 > 250μA
INO LOAD VIN = 1.5V, VOUT = 3.3V
ISWITCH OFF VIN = 6V
IOFF
EN Pin = 0V, VIN = 4.5V
VREF
Close Loop, VDD = 3.3V
VREF
Close Loop, VDD = 3.3V
Min Typ Max Units
-- 0.98 1.05 V
0.8
--
6.5 *
V
--
47
--
μA
--
17
--
μA
--
0.1
1
μA
1.225 1.25 1.275 V
0.843 0.86 0.877 V
LBI Pin Trip Point
RT9262A
VDD = 3.3V
0.843 0.86 0.877 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 to 2.5V, IL = 1mA --
10
-- mV/V
Load Regulation
ΔVLOAD VIN = 2.5V, IL = 1 to 100mA --
0.25
-- mV/mA
LDO PMOS ON Resistance RT9262
VDD = 3.3V
--
1
1.5 Ω
LDO Drop Out Voltage
RT9262 VDROP
VDD = 3.3V, IL = 100mA
--
70
--
mV
LBO ON Resistance
RT9262A
VDD = 3.3V
--
40
--
Ω
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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6
DS9262/A-11 March 2007
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