Data Sheet
RAA207700GBM/7701GBM/7702GBM
Synchronous Buck Regulator with
Internal Power MOSFETs
Description
The RAA207700GBM is monolithic synchronous buck regulator with power MOSFETs in extremely small package.
The RAA207700GBM delivers high output current by small Rds(on) Power MOSFETs. Constant on time control
architecture provides fast transient response, and minimize external components. The RAA207700GBM operates skip
mode at light load, it provides high efficiency in all load condition. Three current ability products can be selected.
R07DS0891EJ0100
Rev.1.00
Aug 02, 2013
Features
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Wide input voltage range: 3 V to 16 V
Output voltage range: 0.8 V to 5 V
Constant-On-Time control
Built-in power MOSFETs suitable for PC, Server application
Very low stand-by current: 0.1
mA
(typ.)
Very low quiescent current :300
mA
(typ. at no load)
Switching frequency: Adjustable up to 2 MHz
High average output current, up to 15 A (7700GBM), 10 A (7701GBM), 5 A (7702GBM)
Controllable driver: Remote ON/OFF
Power Good function
Over current protection/Over voltage protection/Thermal shutdown function
Built-in bootstrapping diode
Soft Start period adjustable
Enhanced light load mode function for higher efficiency
High drivability built-in line switch driver for low-loss line switch driving
Extremely small chip size package with solder bump
Pb-Free/Halogen-Free
Application Circuit
VCIN
VIN
VCIN
ON/OFF
SET
BOOT
VIN
SS
RAA207700GBM
RAA207701GBM
SW
RAA207702GBM
PGOOD
Vout_1
Line SW
control signal
FB
LS_IN
PGND
LS_OUT
SGND
Discrete Line SW
Vout_2
R07DS0891EJ0100 Rev.1.00
Aug 02, 2013
Page 1 of 25
RAA207700GBM/7701GBM/7702GBM
Pin Arrangement
Top View
<RAA207700GBM>
1
VCIN
<RAA207701GBM>
5
LS_
OUT
A
1
VCIN
<RAA207702GBM>
5
LS_
OUT
A
1
VCIN
2
SGND
3
FB
4
LS_
IN
2
SGND
3
FB
4
LS_
IN
2
SGND
3
FB
4
LS_
IN
5
LS_
OUT
A
BOOT
SET
PGO
OD
SS
ON/
OFF
B
BOOT
SET
PGO
OD
SS
ON/
OFF
B
BOOT
SET
PGO
OD
SS
ON/
OFF
B
SW
VIN
VIN
VIN
VIN
C
SW
VIN
VIN
VIN
VIN
C
SW
SW
VIN
VIN
VIN
C
SW
SW
SW
SW
VIN
D
SW
SW
SW
SW
VIN
D
SW
SW
PGND
PGND
PGND
D
SW
PGND
PGND
PGND
PGND
E
SW
PGND
PGND
PGND
PGND
E
SW
SW
SW
PGND
PGND
F
SW
SW
SW
PGND
PGND
F
SW
PGND
PGND
PGND
PGND
G
Bottom View
<RAA207700GBM>
5
LS_
OUT
4
LS_
IN
<RAA207701GBM>
1
VCIN
<RAA207702GBM>
1
VCIN
3
FB
2
SGND
5
A
LS_
OUT
4
LS_
IN
3
FB
2
SGND
5
A
LS_
OUT
4
LS_
IN
3
FB
2
SGND
1
VCIN
A
ON/
OFF
SS
PGO
OD
SET
BOOT
B
ON/
OFF
SS
PGO
OD
SET
BOOT
B
ON/
OFF
SS
PGO
OD
SET
BOOT
B
VIN
VIN
VIN
VIN
SW
C
VIN
VIN
VIN
VIN
SW
C
VIN
VIN
VIN
SW
SW
C
VIN
SW
SW
SW
SW
D
VIN
SW
SW
SW
SW
D
PGND
PGND
PGND
SW
SW
D
PGND
PGND
PGND
PGND
SW
E
PGND
PGND
PGND
PGND
SW
E
PGND
PGND
SW
SW
SW
F
PGND
PGND
SW
SW
SW
F
PGND
PGND
PGND
PGND
SW
G
CSP 35-pin package
2.67 mm × 3.87 mm
CSP 30-pin package
2.67 mm × 3.37 mm
CSP 20-pin package
2.67 mm × 2.37 mm
R07DS0891EJ0100 Rev.1.00
Aug 02, 2013
Page 2 of 25
RAA207700GBM/7701GBM/7702GBM
Pin Description
Pin Name
VCIN
SGND
FB
LS_IN
LS_OUT
BOOT
SET
PGOOD
SS
ON/OFF
VIN
SW
PGND
Note:
Pin No.
1A
2A
3A
4A
5A
1B
2B
3B
4B
5B
—
—
—
Description
Controller input voltage (+5 V input)
Controller analog GND
Feedback voltage input pin
Line SW driver control pin
Line SW driver output pin
Bootstrap voltage pin
Constant on time program pin
Power good indicator pin
Soft start period program pin
Operation enable pin
Input voltage
Switching node
Power GND
Should be connected to SGND on PCB pattern
To be supplied +5 V through integrated SBD
Tie resistor between SW and SET
Pull low when No Good (open drain output)
Tie capacitor between SS and SGND
Operation stop when "L" signal asserted
Remarks
Controller supply input
Should be connected to PGND on PCB pattern
Pin assign of 1A-5A & 1B-5B is common through RAA207700GBM, RAA207701GBM and RAA207702GBM.
R07DS0891EJ0100 Rev.1.00
Aug 02, 2013
Page 3 of 25
RAA207700GBM/7701GBM/7702GBM
Block Diagram
SET
ON/OFF
1M
TSD
TSD
UVLO
2.5
mA
OCP
OCP
UVLO
4.3 V
Enable
VCIN
VIN
BOOT
SS
Enable
UVLO
Fault
Ripple
Comparator
0.8 V
+
+
–
1.0 V
OVP
1 shot
timer
–
+
FB
0.72 V
–
+
UVLO
Enable
Control
Logic
ZCD
Comparator
ZCD
–
+
VCIN
SW
PGOOD
delay
VIN
TSD
Fault
LS_IN
1M
Protection
Function
Fault
OVP
PGND
TSD
OVP
OCP
LS_OUT
SGND
1. Truth table for the ON/OFF pin
ON/OFF Input
"L"
"Open"
"H"
Driver Chip Status
Shutdown (operation STOP)
Shutdown (operation STOP)
Enable (Normal operation)
2. Truth table for Line Switch driver
LS_IN Input
"L"
"Open"
"H"
GND
GND
VIN
LS_OUT Status
R07DS0891EJ0100 Rev.1.00
Aug 02, 2013
Page 4 of 25
RAA207700GBM/7701GBM/7702GBM
Absolute Maximum Ratings
(Ta = 25°C)
Item
Input voltage
Switch node voltage
BOOT voltage
Controller voltage
Input pin voltage (FB, LS_IN)
ON/OFF voltage
SET voltage
PGOOD voltage
PGOOD sink current
Operating junction temperature
Storage temperature
Notes: 1.
2.
3.
4.
VIN
SW
VBOOT
VCIN
V
INPUT
V
ON/OFF
V
SET
V
PGOOD
I
PGOOD
Tj-opr
Tstg
Symbol
Ratings
–0.3 to +20
20(DC), 23(<10 ns)
25(DC), 28(<10 ns)
–0.3 to +6
–0.3 to VCIN +0.3
–0.3 to VIN
–0.3 to VIN
–0.3 to VIN
+2
–40 to +125
–55 to +150
Unit
V
V
V
V
V
V
V
V
mA
°C
°C
Notes
1
1
1, 2
1
1, 3
1
1
1
4
Rated voltages are relative to voltages on the SGND and PGND pins.
BOOT – VCIN < 20 V
VCIN + 0.3 V < 6 V
For rated current, (+) indicates inflow to the chip.
Thermal Information
Item
Thermal resistance
(junction to air when device is
mounted on evaluation board)
Note:
Symbol
qj-a
Part No.
RAA207700GBM
RAA207701GBM
RAA207702GBM
Value
27
33
39
Unit
°C/W
Note
1
1. Not assured value, just reference for design. Above data is taken using Renesas's reference board.
Recommended Operating Condition
Item
Input voltage
Controller voltage
Continuous output current
Symbol
VIN
VCIN
IOUT
Ratings
3 to 16
4.5 to 5.5
0 to 15
0 to 10
0 to 5
Unit
V
V
A
Remarks
15 A: RAA207700GBM
10 A: RAA207701GBM
5 A: RAA207702GBM
R07DS0891EJ0100 Rev.1.00
Aug 02, 2013
Page 5 of 25
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