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RT9986 Folha de dados(PDF) 9 Page - Richtek Technology Corporation

Nome de Peças RT9986
Descrição Electrónicos  7-CH DC/DC Converter for DSC
PDF  24 Pages
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Fabricante Electrônico  RICHTEK [Richtek Technology Corporation]
Página de início  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9986 Folha de dados(HTML) 9 Page - Richtek Technology Corporation

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DS9986-00 May 2011
www.richtek.com
RT9986
To be continued
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
CH4 Synchronous Step-Down
Supply Current into VDDM
IQ4
Non switching, VEN1234 = 3.3V
--
--
800
μA
CH5 Synchronous Step-Up Supply
Current into VDDM
IQ5
Non switching, VEN56 = 3.3V
--
--
800
μA
CH6 (Inverting)
Supply Current into VDDM
IQ6
Non switching, VEN56 = 3.3V
--
--
800
μA
CH7 (WLED) in Step-Up Mode
Supply Current into VDDM
IQ7b
Non switching, VEN7 = 3.3V
--
--
800
μA
CH7 (WLED) in Current Source
Mode Supply Current into VDDM
IQ7c
VEN7 = 3.3V, VLX7 = 0V
--
--
800
μA
Oscillator
CH1, 2, 3, 4 Operation Frequency
fOSC
1800
2000
2200
kHz
CH5, 6, 7 Operation Frequency
fOSC2
CH7 in Step-Up mode
900
1000
1100
kHz
CH1 Maximum Duty Cycle (Step-Up)
VFB1 = 0.75V
80
83
86
%
CH2 Maximum Duty Cycle (Step-Up)
VFB2 = 0.75V
80
83
86
%
CH2 Maximum Duty Cycle
(Step-Down)
VFB2 = 0.75V
--
--
100
%
CH3 Maximum Duty Cycle
(Step-Down)
VFB3 = 0.75V
--
--
100
%
CH4 Maximum Duty Cycle
(Step-Down)
VFB4 = 0.75V
--
--
100
%
CH5 Maximum Duty Cycle (Step-Up)
VFB5 = 1.15V
91
93
97
%
CH6 Maximum Duty Cycle (Inverting)
VFB6 = 0.7V
91
93
97
%
CH7 Maximum Duty Cycle (Step-Up)
VFB7 = 0.15V
91
93
97
%
Feedback, Regulation Voltage
Feedback Regulation Voltage @
FB1, FB2, FB3, FB4
0.788
0.8
0.812
V
Feedback Regulation Voltage @ FB5 VFB5
1.237
1.25
1.263
V
Feedback Regulation Voltage @ FB6
(Inverting)
VFB6
0.59
0.6
0.61
V
Feedback Regulation Voltage @ FB7 VFB7
0.237
0.25
0.263
V
Output Current (CS Mode)
28.5
30
31.5
mA
Dropout Voltage @ FB7 (CS Mode)
VLX7 = 0V
--
--
0.3
V
VREF Output Voltage
VREF
1.782
1.8
1.818
V
VREF Load Regulation
0
μA < IREF < 200μA
--
--
10
mV
Power Switch
P-MOSFET
VPVDD1 = 3.3V
--
200
300
CH1 On-Resistance
N-MOSFET
RDS(ON)1
VPVDD1 = 3.3V
--
150
250
m
Ω
CH1 Current Limitation (Step-Up)
ILIM1
2.2
3
4
A
P-MOSFET
VPVDD2 = 3.3V
--
200
300
CH2 On Resistance
N-MOSFET
RDS(ON)2
VPVDD2 = 3.3V
--
150
250
m
Ω
CH2 Current Limitation (Step-Down)
ILIM2_D
1.2
1.6
2
A
CH2 Current Limitation (Step-Up)
ILIM2_U
2.2
3
4
A



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