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RT8106AGQW

P1-P3P4-P6P7-P9P10-P12P13-P14
1
RT8106/A
DS8106/A-04 April 2011
www.richtek.com
Applications
z Graphic Card
z Motherboard, Desktop Servers
z IA and Telecom Equipment
z General High Power DC/DC Regulator
5V/12V Synchronous Buck PWM DC-DC Controller
General Description
The RT8106/A is a DC/DC synchronous buck PWM
controller with embedded driver support up to 12V+12V
boot-strapped voltage for high efficiency power driving. The
part integrates full functions of voltage regulation, power
monitoring and protection into a single small footprint
WDFN-10L 3x3 (Exposed Pad) package.
The RT8106/A adopts a high-gain voltage mode PWM
control for simple application design. An internal 0.8V
reference allows the output voltage to be precisely
regulated for low voltage requirement. Based on all
RT8106/A features, the part provides an optimum
compromise between efficiency, total B.O.M. count, and cost.
Features
zz
zz
z
Single 5 to 12V Bias Supply
zz
zz
z Drive All Low Cost N-MOSFETs
zz
zz
z Support High Current Application up to 30A
zz
zz
z High-Gain Voltage Mode PWM Control
zz
zz
z 300kHz/600kHz Fixed Frequency Oscillator
zz
zz
z Fast Transient Response :
``
``
` High-Speed EA Amplifier
``
``
` 0 to 85% Duty Ratio
``
``
` External Compensation in The Control Loop
zz
zz
z Internal Soft-Start
zz
zz
z Adaptive Non-Overlapping Gate Driver
zz
zz
z Over Current Fault Monitor on low side MOSFET
zz
zz
z RoHS Compliant and 100% Lead (Pb)-Free
Pin Configurations
(TOP VIEW)
WDFN-10L 3x3
BOOT
LX
GND
LGATE
PGOOD
VOS
FB
VCC
COMP/EN
UGATE
9
8
7
9
1
2
3
4
5
10
GND
11
Ordering Information
Note :
Richtek products are :
` RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
` Suitable for use in SnPb or Pb-free soldering processes.
Marking Information
DY=YM
DNN
RT8106GQW
DY= : Product Code
YMDNN : Date Code
EP=YM
DNN
RT8106AGQW
EP= : Product Code
YMDNN : Date Code
RT8106/A
Package Type
QW : WDFN-10L 3x3 (W-Type)
Lead Plating System
P : Pb Free
G : Green (Halogen Free and Pb Free)
Z : ECO (Ecological Element with
Halogen Free and Pb free)
600kHz
300kHz
2
RT8106/A
www.richtek.com
DS8106/A-04 April 2011
Functional Pin Description
Pin No. Pin Name Pin Function
1 BOOT
This pin is boot-strapped by external capacitor and is applied for the embedded
High Side gate driver power.
2 LX Phase node of PWM.
3 UGATE High Side gate drive.
4 LGATE
Low Side gate drive. It also acts as OC setup pin by adjusting a resistor
connecting to GND.
5,
11 (Exposed Pad)
GND
Ground. The exposed pad must be soldered to a large PCB and connected to
GND for maximum power dissipation.
6 VCC
VCC is generally applied for bias power for IC logics and gate driver control. To
connect a 1μF bypass capacitor to GND is recommended.
7 COMP/EN
Compensation pin of PWM and Output of the PWM error amplifier. Connect
compensation network between this pin and FB. This pin is also applied as
Enable pin.
8 FB
PWM Feedback. The output feedback of PWM. The pin is applied for voltage
regulation.
9 VOS
The pin is scaled to be 0.8v and provides under voltage protection, over voltage
protection and PGOOD function.
10 PGOOD This pin is an open drain driver and Indicates PWM output regulated in +/-10%.
7
3
2
4
8
C
O
M
P
/
E
N
U
G
A
T
E
F
B
R
T
8
1
0
6
/
A
L
G
A
T
E
1
B
O
O
T
L
X
L
1
V
I
N
P
G
O
O
D
1
0
P
G
O
O
D
G
N
D
5
,
E
x
p
o
s
e
d
P
a
d
(
1
1
)
R
B
O
O
T
Q
1
Q
2
R
7
C
7
C
O
U
T
V
O
U
T
V
O
S
E
N
V
C
C
6
V
C
C
C
B
O
O
T
R
U
G
A
T
E
R
O
C
S
E
T
R
F
B
R
F
B
R
B
C
B
R
L
R
O
F
F
S
E
T
R
O
F
F
S
E
T
C
P
C
f
R
f
9
C
B
P
C
4
D
1
V
G
D
Typical Application Circuit
DY YM
DNN
RT8106ZQW
DY : Product Code
YMDNN : Date Code
EP YM
DNN
RT8106AZQW
EP : Product Code
YMDNN : Date Code
3
RT8106/A
DS8106/A-04 April 2011
www.richtek.com
Function Block Diagram
UGATE
LX
LGATE
BOOT
+
-
+
-
0
.
8
V
Control
Logic
+
-
+
-
-
+
+
-
-
+
OC
UV
OV
UV_level
OV_level
PGH_level
PGL_level
EN
-1
LGATE
PGOOD
GND
COMP/EN
FB
VOS
LX
I
OC
P1-P3P4-P6P7-P9P10-P12P13-P14

RT8106AGQW

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Description:
IC REG CTRLR BUCK 10WDFN
Lifecycle:
New from this manufacturer.
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