rt9911 Richtek Technology Corporation, rt9911 Datasheet - Page 11

• Manufacturer Part Number: rt9911
• Description: 6 Channel Dc/dc Converters
• Manufacturer: Richtek Technology Corporation

Note 1. Stresses listed as the above “Absolute Maximum Ratings” may cause permanent damage to the device. These are for
Note 2. Devices are ESD sensitive. Handling precaution recommended.
Note 3. The device is not guaranteed to function outside its operating conditions.
Note 4. θ
Note 5. A Schottky retifier connected from LX1 to PVDD1 is required for low-voltage startup, refer to Figure 1.
DS9911-04 August 2007
Power Switch
CH5 On Resistance of MOSFET
CH6 On Resistance of MOSFET
Switch Controller
OK2 pin Sink Current
External Current Setting (CH3)
CS3 Sourcing Current
VFB6 Sink Current
Protection
Under Voltage Protection Threshold
Voltage @ FB1, FB2
Over Voltage Protection @ FB1, FB2
Control
EN1, EN2, EN3, EN4, EN5, EN6 Input
High Level Threshold
EN1, EN2, EN3, EN4, EN5, EN6 Input
Low Level Threshold
EN1, EN2, EN3, EN4, EN5, EN6 Sink
Current
Select Pin Input High Level Threshold
Select Pin Input Low Level Threshold
Select Pin Sink Current
Thermal Protection
Thermal Shutdown
Thermal Shutdown Hysteresis
stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the
operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended
periods may remain possibility to affect device reliability.
JEDEC 51-3 thermal measurement standard.
JA
is measured in the natural convection at T
Parameter
R
R
R
R
I
I
I
T
ΔT
CS3
VFB 6
SELECT
Symbol
SD
DS(O N)P5
DS(O N)N5
DS(O N)P6
DS(O N)N6
SD
P-MOSFET, PV
N-MOSFET, PV
P-MOSFET, PV
N-MOSFET, PV
OK2 = 1V
SELECT = 0V
SELECT = 0V
V
V
V
DDM
DDM
DDM
A
= 25°C on a low effective thermal conductivity test board of
= 3.3V
= 3.3V
= 3.3V
Test Conditions
DD5
DD5
DD5
DD5
= 3.3V
= 3.3V
= 3.3V
= 3.3V
Min
125
0.3
0.4
0.4
90
40
--
--
--
--
5
--
--
--
--
--
--
Typ
180
0.4
20
10
50
--
--
--
--
--
6
6
6
6
1
2
2
RT9911
www.richtek.com
Max
0.5
1.3
1.3
15
15
15
15
15
60
--
--
--
6
--
6
--
--
Units
uA
uA
uA
uA
uA
°C
°C
Ω
Ω
Ω
Ω
V
V
V
V
V
V
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