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RT8208BGQW

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18
RT8208A/B
7
DS8208A/B-04 May 2011 www.richtek.com
Typical Operating Characteristics
Switching Frequency vs. Output Current
0
50
100
150
200
250
300
350
400
450
0.001 0.01 0.1 1 10
Load Current (A)
Switching Frequency (kHz) 1
CCM
DEM
V
IN
= 15V, V
OUT
= 1.8V, EN = VDD / Floating
Switching Frequency vs. Output Current
0
50
100
150
200
250
300
350
400
450
0.001 0.01 0.1 1 10
Load Current (A)
Switching Frequency (kHz) 1
CCM
DEM
V
IN
= 15V, V
OUT
= 1.8V, EN = VDD / Floating
Switching Frequency vs. Output Current
0
50
100
150
200
250
300
350
400
450
0.001 0.01 0.1 1 10
Load Current (A)
Switching Frequency (kHz) 1
CCM
DEM
V
IN
= 19V, V
OUT
= 1.8V, EN = VDD / Floating
1.8V Efficiency vs. Load Current
0
10
20
30
40
50
60
70
80
90
100
0.001 0.01 0.1 1 10
Load Current (A)
Efficiency (%)
CCM
DEM
V
IN
= 10V, V
OUT
= 1.8V
EN = VDD / Floating
1.8V Efficiency vs. Load Current
0
10
20
30
40
50
60
70
80
90
100
0.001 0.01 0.1 1 10
Loan Current (A)
Efficiency (%)
CCM
DEM
V
IN
= 15V, V
OUT
= 1.8V
EN = VDD / Floating
1.8V Efficiency vs. Load Current
0
10
20
30
40
50
60
70
80
90
100
0.001 0.01 0.1 1 10
Load Current (A)
Efficiency (%)
V
IN
= 19V, V
OUT
= 1.8V
EN = VDD / Floating
DEM
CCM
RT8208A/B
8
DS8208A/B-04 May 2011www.richtek.com
Time (400μs/Div)
V
OUT
(1V/Div)
EN
(2V/Div)
PGOOD
(5V/Div)
UGATE
(10V/Div)
EN = Floating, V
IN
= 12V
V
OUT
= 0.9V, No Load
Power On From EN (CCM)
Power On From EN (DEM)
Time (400μs/Div)
V
OUT
(1V/Div)
UGATE
(10V/Div)
EN
(5V/Div)
PGOOD
(5V/Div)
EN = VDD ,V
IN
= 12V
V
OUT
= 0.9V, No Load
Shutdown Input Current vs. Input Voltage
0
0.2
0.4
0.6
0.8
1
7 9 11 13 15 17 19 21 23 25
Input Voltage (V)
Shutdown Input Current (μA) 1
EN = GND, No Load
0.9V Load Transient Response
Time (25μs/Div)
V
IN
= 12V, EN = Floating, CCM Mode, V
OUT
= 0.9V
V
OUT
(100mV/Div)
I
OUT
(10A/Div)
UGATE
(20V/Div)
LGATE
(5V/Div)
UVP Waveforms
Time (20μs/Div)
V
IN
= 12V, V
OUT
= 0.9V
No Load, EN = Floating
(CCM Mode)
V
OUT
(500mV/Div)
UGATE
(20V/Div)
LGATE
(5V/Div)
I
L
(10A/Div)
Time (40μs/Div)
V
OUT
(500mV/Div)
UGATE
(10V/Div)
LGATE
(5V/Div)
OVP Waveforms
V
IN
= 12V, V
OUT
= 0.9V, Load
EN = VDD (DEM Mode)
RT8208A/B
9
DS8208A/B-04 May 2011 www.richtek.com
Time (20μs/Div)
V
OUT
(1V/Div)
G1
(5V/Div)
UGATE
(20V/Div)
LGATE
(5V/Div)
V
OUT
Down Transient (Load=10A)
V
IN
= 12V, EN = Floating
(CCM Mode)
V
OUT
= 1.5V to 0.9V
RT8208A
V
OUT
(1V/Div)
G1
(5V/Div)
UGATE
(20V/Div)
LGATE
(5V/Div)
V
IN
= 12V, EN = Floating
(CCM Mode)
V
OUT
= 1.5V to 0.9V
Time (20μs/Div)
V
OUT
Down Transient (No Load)
RT8208A
V
OUT
(1V/Div)
G1
(5V/Div)
UGATE
(20V/Div)
LGATE
(5V/Div)
Time (20μs/Div)
V
IN
= 12V, EN = Floating
(CCM Mode)
V
OUT
= 0.9V to 1.5V
V
OUT
Up Transient (Load=10A)
RT8208A
V
OUT
(1V/Div)
G1
(5V/Div)
UGATE
(20V/Div)
LGATE
(5V/Div)
Time (20μs/Div)
V
IN
= 12V, EN = Floating
(CCM Mode)
V
OUT
= 0.9V to 1.5V
V
OUT
Up Transient (No Load)
RT8208A
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18

RT8208BGQW

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Buy RT8208BGQW
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Description:
IC REG CTRLR BUCK 16WQFN
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New from this manufacturer.
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