RT9266 Datasheet, PDF (5/14 Pages) Richtek Technology Corporation – Tiny Package, High Efficiency, Step-up DC/DC Converter

RT9266
Absolute Maximum Ratings
l Supply Voltage --------------------------------------------------------------------------------------------------- −0.3V to 7V
l LX Pin Switch Voltage ------------------------------------------------------------------------------------------ −0.3V to 7V
l Other I/O Pin Voltages ------------------------------------------------------------------------------------------ −0.3V to (V_DD + 0.3V)
l LX Pin Switch Current ------------------------------------------------------------------------------------------- 2.5A
l EXT Pin Driver Current ------------------------------------------------------------------------------------------ 200mA
l Package Thermal Resistance
SOT-23-6, θ_JC ----------------------------------------------------------------------------------------------------- 145°C/W
SOT-89-5, θ_JC ----------------------------------------------------------------------------------------------------- 45°C/W
l Operating Junction Temperature ------------------------------------------------------------------------------ 125°C
l Storage Temperature Range ----------------------------------------------------------------------------------- −65°C to +150°C
NOTE:
Absolute Maximum ratings are threshold limit values that must not be exceeded even for an instant under any conditions.
Moreover, such values for any two items must not be reached simultaneously. Operation above these absolute maximum
ratings may cause degradation or permanent damage to the device. These are stress ratings only and do not necessarily
imply functional operation below these limits
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
Shutdown Current I (V_IN)
Switch-off Current I (VDD)
Continuous Switching Current
V_ST
I_L = 1mA
V_DD
V_DD pin voltage
I_OFF
EN Pin = 0V, V_IN = 4.5V
I_{SWITCH OFF} V_IN = 6V
I_SWITCH
V_IN = EN = 3.3V, V_FB = GND
No Load Current I (V_IN)
Feedback Reference Voltage
Switching Frequency
Maximum Duty
LX ON Resistance
Current Limit Setting
EXT ON Resistance to VDD
EXT ON Resistance to GND
Line Regulation
Load Regulation
EN Pin Trip Level
Temperature Stability for Vout
Thermal Shutdown Hysterises
I_{NO LOAD}
V_REF
F_S
D_MAX
I_LIMIT
∆V_LINE
∆V_LOAD
T_S
∆T_SD
V_IN = 1.5V, V_OUT = 3.3V
Close Loop, VDD = 3.3V
V_DD = 3.3V
V_DD = 3.3V
V_DD = 3.3V
V_DD = 3.3V
V_DD = 3.3V
V_DD = 3.3V
V_IN = 3.5 ~ 6V, I_L = 1mA
V_IN = 2.5V, I_L = 1 ~ 100mA
V_DD = 3.3V
Min Typ Max Units
-- 0.98 1.05 V
2
--
6
V
-- 0.01 1
µA
--
17
25
µA
0.4 0.55 0.7 mA
--
75^*
--
µA
1.225 1.25 1.275 V
425 500 575 kHz
85 95
--
%
--
0.3 1.1
Ω
1.6
2
2.6^**
A
--
5
8.5
Ω
--
5
8.5
Ω
--
1.5 10 mV/V
-- 0.25^*** -- mV/mA
0.4 0.8 1.2
V
--
50
-- ^ppm/_°C
--
10
--
°C
DS9266-12 May 2007
www.richtek.com
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