RT9911
Absolute Maximum Ratings
(Note 1)
Supply Voltage, V
DDM
-----------------------------------------------------------------------------------------
−0.3V
to 7V
Power Switch ----------------------------------------------------------------------------------------------------
−0.3V
to (V
DD
+ 0.3V)
The Other Pins --------------------------------------------------------------------------------------------------
−0.3V
to 7V
Power Dissipation, P
D
@ T
A
= 25°C
VQFN−40L 6x6 -------------------------------------------------------------------------------------------------- 2.778W
Package Thermal Resistance (Note 4)
VQFN-40L 6x6,
θ
JA
--------------------------------------------------------------------------------------------- 36°C/W
Junction Temperature ------------------------------------------------------------------------------------------ 150°C
Lead Temperature (Soldering, 10 sec.) -------------------------------------------------------------------- 260°C
Storage Temperature Range ---------------------------------------------------------------------------------
−65°C
to 150°C
ESD Susceptibility (Note 2)
HBM (Human Body Mode) ----------------------------------------------------------------------------------- 2kV
MM (Machine Mode) ------------------------------------------------------------------------------------------- 200V
Recommended Operating Conditions
(Note 3)
Dimming Control Frequency Range, CH6 ---------------------------------------------------------------- 300Hz to 900Hz
Supply Voltage, V
DDM
----------------------------------------------------------------------------------------- 2.4V to 5.5V
Junction Temperature Range ---------------------------------------------------------------------------------
−40°C
to 125°C
Operation Temperature Range -------------------------------------------------------------------------------
−40°C
to 85°C
Electrical Characteristics
(V
DDM
= 3.3V, T
A
= 25°C, unless otherwise specified)
Parameter
Supply Voltage
VDDM Minimum Startup Voltage
VDDM Operating Voltage
VDDM Over Voltage Protection
Supply Current
Symbol
V
ST
V
DDM
(Note 5)
Test Conditions
Min
--
2.4
5.9
Typ
--
--
6.5
Max
1.6
5.5
--
Units
V
V
V
VDDM Pin Voltage
Shutdown Supply Current into VDDM I
OFF
CH1 (Sync-Boost or Syn-Buck)
Supply Current into VDDM
CH2 (Sync-Buck) Supply Current into
VDDM
CH3 (Sync-Boost) Supply Current
into VDDM
CH4 (Asyn-Boost) Supply Current
into VDDM
CH5 (Asyn-Inverter) Supply Current
into VDDM
CH6 (Asyn-Boost) Supply Current
into VDDM
I
Q1
I
Q2
I
Q3
I
Q4
I
Q5
I
Q6
EN1 = EN2 = EN3 = EN4 = EN5
= EN6 = 0V
V
DDM
= 3.3V, Non-Switching
V
DDM
= 3.3V, Non-Switching
V
DDM
= 3.3V, Non-Switching
V
DDM
= 3.3V, Non-Switching
V
DDM
= 3.3V, Non-Switching
V
DDM
= 3.3V, Non-Switching
--
--
--
--
--
--
--
1
--
--
--
--
--
--
10
430
350
350
300
300
350
uA
uA
uA
uA
uA
uA
uA
To be continued
DS9911-04 August 2007
www.richtek.com
9
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
