RT9267 RICHTEK [Richtek Technology Corporation], RT9267 Datasheet - Page 4

• Manufacturer Part Number: RT9267
• Description: High Efficiency, Low Quiescent, Triple Output DC-DC Converter
• Manufacturer: RICHTEK [Richtek Technology Corporation]

RT9267
Electrical Characteristics
(V
* Note. The EN pin shall be tied to VDD pin and inhibit to act the ON/OFF state whenever the VDD pin voltage
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4
Section for Adaptive PWM Converters
Start-Up Voltage
Operating VDD Range
Feedback Reference Voltage
Switching Rate
Maximum Duty
LX ON Resistance
Current Limit Setting
No Load Current (V
Switch-off Current (VDD)
Line Regulation
Load Regulation
Section for LDO
LDO PMOS ON Resistance
LDO Drop Out Voltage
Feedback Reference Voltage for LDO V
Section for Voltage Detector
LBO ON Resistance
LBI Pin Trip Point
Section for Whole Chip Property
Operating VDD Range
Shutdown Current (V
EN Pin Trip Level
Temperature Stability for FB, LFB, LBI T
Thermal Shutdown
IN
= 5V, C
may reach to 5.5V or above, in case that VDD pin is conducted from VIN.
IN
= C
Parameter
OUT
= 1μF, T
IN
IN
)
)
A
= 25°C, unless otherwise specified)
V
V
V
F
D
I
I
I
ΔV
ΔV
V
V
I
T
LIMIT
NO LOAD
SWITCH OFF
OFF
S
S
SD
ST
DD
REF
DROP
REF
DD
Symbol
MAX
LINE
LOAD
Preliminary
I
Start-up to I
Close Loop, VDD = 3.3V
VDD = 3.3V
VDD = 3.3V
VDD = 3.3V
VDD = 3.3V
V
V
V
V
VDD = 3.3V
VDD = 3.3V, I
Close Loop, VDD = 3.3V
VDD = 3.3V
Start-up to I
EN1 = EN2 = 0, V
Guaranteed by Design
VDD = 3.3V
VDD = 3.3V
L
IN
IN
IN
IN
= 1mA
= 2.5V, I
= 1.5V, V
= 6V
= 1.5 ~ 2.5V, I
Test Conditions
DD
DD1
L
OUT
= 1 ~ 100mA
L
> 250μA
= 100mA
> 250μA
= 3.3V
IN
L
= 1mA
= 4.5V
1.225
0.843
0.843
Min
0.8
0.8
0.4
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DS9267-08 March 2007
0.98
1.25
0.25
0.25
0.86
0.86
Typ
550
100
165
0.1
1.0
92
47
17
10
40
40
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2
1
1.275
0.877
0.877
Max
1.05
6.5
1.5
1.4
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6
1
*
mV/mA
ppm/°C
Units
mV/V
kHz
mV
μA
μA
μA
°C
%
Ω
Ω
Ω
V
V
V
A
V
V
V
V