RT5002
Parameter
Symbol
Test Conditions
Min
Typ
Max Unit
VDDM Over Voltage Protection
(OVP) (Hysteresis High)
5.82
6.0
6.18
V
VDDM OVP Hysteresis (Gap)
VDDM UVLO (Hysteresis High)
VDDM UVLO Hysteresis (Gap)
Supply Current
--
2.2
--
−0.25
2.4
--
2.6
--
V
V
V
0.3
All Channels are Off,
Shutdown Supply Current
I
--
--
--
--
--
--
--
--
--
10
--
--
--
--
--
--
--
--
20
μA
μA
μA
μA
μA
μA
μA
μA
μA
OFF
V
= 0V, V
= 4.2V
EN1234
BAT
CH1 (Sync-Step-Up) Supply Current
into VDDM
I
Q1
No Switching, V
No Switching, V
No Switching, V
No Switching, V
= 3.3V
= 3.3V
= 3.3V
= 3.3V
800
800
800
800
800
800
800
800
EN1234
EN1234
CH2 (Syn-Step-Down) Supply
Current into VDDM
I
Q2
CH3 (Syn-Step-Down)
Supply Current into VDDM
CH4 (Syn-Step-Down)
Supply Current into VDDM
CH5 (Syn-Step-Up)
Supply Current into VDDM
CH6 (Inverting)
Supply Current into VDDM
CH7 (WLED) in Step-Up Mode
Supply Current into VDDM
CH7 (WLED) in Current Source
mode Supply Current into VDDM
I
Q3
EN1234
EN1234
I
Q4
I
Q5
Non Switching, EN56 = 1
No Switching, EN56 = 1
I
Q6
No Switching, EN7_DIM7 [4:0]
= 31, MOD7 = 1
EN7_DIM7 [4:0] = 31,
MOD7 = 0
I
Q7b
I
Q7c
Oscillator
CH1, 2, 3, 4 Operation Frequency
CH5, 6, 7 Operation Frequency
CH1 Maximum Duty Cycle (Step-Up)
f
1800
900
80
2000
1000
83
2200 kHz
OSC
f
CH7 in Step-Up Mode
1100
86
kHz
%
OSC2
V
V
= 0.75V
= 0.75V
FB1
FB2
CH2 Maximum Duty Cycle
(Step-Down)
CH3 Maximum Duty Cycle
(Step-Down)
--
--
--
--
100
100
%
%
V
= 0.75V
FB3
CH4 Maximum Duty Cycle
(Step-Down)
V
V
V
V
= 0.75V
= 1.15V
= 0.7V
--
--
100
97
%
%
%
%
FB4
FB5
CH5 Maximum Duty Cycle (Step-Up)
CH6 Maximum Duty Cycle (Inverting)
CH7 Maximum Duty Cycle (Step-Up)
91
91
91
93
93
93
97
FB6
= 0.15V
97
FB7
Feedback, Output Regulation Voltage, and Output Regulation Current
Feedback Regulation Voltage @
FB1, FB2, FB3, FB4
0.788
1.237
0.58
0.8
0.812
V
V
V
Feedback Regulation Voltage @ FB5
1.25 1.263
0.6 0.62
Feedback Regulation Voltage @ FB6
(Inverting)
Feedback Regulation Voltage @ FB7
(Step-Up mode and current source
mode)
EN7_DIM7 [4:0] = 31
0.237
0.25 0.263
V
To be continued
www.richtek.com
10
DS5002-00 November 2011
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
