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RT9267PC Datasheet(PDF) 4 Page - Richtek Technology Corporation

Part # RT9267PC
Description  High Efficiency, Low Quiescent, Triple Output DC-DC Converter
PDF  9 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9267PC Datasheet(HTML) 4 Page - Richtek Technology Corporation

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RT9267
Preliminary
4
DS9267-08
March 2007
www.richtek.com
Electrical Characteristics
(VIN = 5V, CIN = COUT = 1
μF, TA = 25°C, unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
Section for Adaptive PWM Converters
Start-Up Voltage
VST
IL = 1mA
--
0.98
1.05
V
Operating VDD Range
VDD
Start-up to IDD > 250μA
0.8
--
6.5
*
V
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
ILIMIT
VDD = 3.3V
--
2
--
A
No Load Current (VIN)
INO LOAD
VIN = 1.5V, VOUT = 3.3V
--
47
--
μA
Switch-off Current (VDD)
ISWITCH OFF VIN = 6V
--
17
--
μA
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
Section for LDO
LDO PMOS ON Resistance
VDD = 3.3V
--
1
1.5
Ω
LDO Drop Out Voltage
VDROP
VDD = 3.3V, IL = 100mA
--
100
--
mV
Feedback Reference Voltage for LDO
VREF
Close Loop, VDD = 3.3V
0.843
0.86
0.877
V
Section for Voltage Detector
LBO ON Resistance
VDD = 3.3V
--
40
--
Ω
LBI Pin Trip Point
VDD = 3.3V
0.843
0.86
0.877
V
Section for Whole Chip Property
Operating VDD Range
VDD
Start-up to IDD1 > 250μA
0.8
--
6
V
Shutdown Current (VIN)
IOFF
EN1 = EN2 = 0, VIN = 4.5V
--
0.1
1
μA
EN Pin Trip Level
VDD = 3.3V
0.4
1.0
1.4
V
Temperature Stability for FB, LFB, LBI TS
Guaranteed by Design
--
40
--
ppm/
°C
Thermal Shutdown
TSD
--
165
--
°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, in case that VDD pin is conducted from VIN.



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