Supply Supervisor. R7510A Datasheet

R7510A Supervisor. Datasheet pdf. Equivalent

R7510A Datasheet
Recommendation R7510A Datasheet
Part R7510A
Description PC Power Supply Supervisor
Feature R7510A; ® R7510A PC Power Supply Supervisor General Description R7510A is a supervisor IC especially desig.
Manufacture Richtek
Datasheet
Download R7510A Datasheet




Richtek R7510A
®
R7510A
PC Power Supply Supervisor
General Description
R7510A is a supervisor IC especially designed for PC power
supplies with 3.3V, 5V and 12V outputs. The R7510A
integrates a remote ON/OFF control input (PSONB), noise
de-bounce/deglitch circuits, timing-and-fault control logics,
an output power good indicator (PGO), an input power
good input (PGI) and full output protections which include
a fault indicator (FPOB), under voltage and over voltage
protections. R7510A minimizes external component count
and makes the designs of power supply easier.
As the PSONB receives a valid ON/OFF signal from a PC
motherboard, the FPOB voltage goes low to start a power-
on process. When the power-on process is completed,
all of protections are enabled and the PGO voltage goes
high to indicate that the output voltages are all in regulation
ranges.
Ordering Information
R7510A
Package Type
N : DIP-8
Lead Plating System
G : Green (Halogen Free and Pb Free)
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
RichPower
R7510A
GNYMDNN
R7510AGN : Product Number
YMDNN : Date Code
Features
z VDD Under Voltage Lockout Protection
z Output Over Voltage Protections (OVP) for 3.3V, 5V
and 12V
z Output Under Voltage Protections (UVP) for 3.3V
and 5V
z Open-Drain Power Good (PGO) and Fault
Protection (FPOB) Outputs
z 300ms Power Good Delay Time
z 38ms PSONB Remote ON/OFF De-bounce Time
z 55μs OVP and 73μs UVP Noise Deglitch Times
z 3.5ms PSONB Turn-off Delay Time
z Two-Threshold PGI Input with 73μs Noise Deglitch
Time
z 75ms UVP Blanking Time during Start-up
z Low Cost and Component Count
z RoHS Compliant and Halogen Free
Pin Configuration
(TOP VIEW)
PGO VDD V5 V33
87
65
2 34
PGI GND FPOB PSONB
DIP-8
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
R7510A-00 January 2012
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1



Richtek R7510A
R7510A
Typical Application Circuit
+5VIS
+3.3VIS
+12VIS
+5VSB
PS ON/OFF
1
R7510A
PGI PGO
8
2
GND
3 FPOB
4 PSONB
VDD 7
V5 6
V33 5
+5V
+3.3V
+12V
PGO
+5VSB
Functional Pin Description
Pin No.
1
2
3
4
5
6
7
8
Pin Name
Pin Description
PGI Power Good Signal Input Pin. This pin senses partial voltage of the system input voltage.
GND
Ground Pin of the IC. All voltage levels are measured with respect to this pin. Ties the pin
directly to system ground plane with the lowest impedance.
FPOB
PSONB
Fault Protection Output Pin. This pin is pulled low when PSONB = L and no protections
happened.
Remote ON/OFF Control Input Pin. This pin is designed with a 38ms (typical) De-bounce
time to avoid input voltage bounce.
V33 3.3V OVP and UVP Detection Input Pin.
V5 5V OVP and UVP Detection Input Pin.
VDD
PGO
Supply Voltage and 12V OVP Detection Input Pin. Connect a noise decoupling capacitor
between this pin and GND.
Open-Drain Power Good Output Pin. When all output voltages are in their regulation
ranges, the PGO voltage goes high.
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
2
is a registered trademark of Richtek Technology Corporation.
R7510A-00 January 2012



Richtek R7510A
Functional Block Diagram
PSONB
V33
V5
UVLO
1.2V / 1.8V
+
-
clr
38ms
Debounce
VREF 1.2V
VDD
OV
-
+
- UV
+
OV
-
+
- UV
+
OV
-
+
R7510A
Shutdown 3.5ms
Rising Delay
UVLO
UVP
clr
73µs
Deglitch
Under-
Voltage
Lockout
VDD
Bandgap
and
Regulator
VREF VREG VDD
1.2V 5V
Oscillator
CLK
FPOB
OVP
clr
55µs
Deglitch
R
Q
S
GND
VTH_PGIL = 0.95V -
+
PGI +
VTH_PGIH = 1.2V -
75ms
Rising Delay
clr
Shutdown
clr
73µs
Deglitch
300ms
Rising
Delay
VDD
PGO
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
R7510A-00 January 2012
is a registered trademark of Richtek Technology Corporation.
3







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