RC5060 Ver la hoja de datos (PDF) - Fairchild Semiconductor
Número de pieza
componentes Descripción
Fabricante
RC5060 Datasheet PDF : 15 Pages
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RC5060
Pin Assignments
QCAP
1
20
PUMP
2
19
SDRAMOUT
3
18
SDRAMFB
4
17
5VSTBY
5 RC5060
16
3VOUT1
6
15
3VOUT2
7
14
3VFB
8
13
PWRGD
9
SLP_S3#
10
12
11
VCCP
5VOUT1
5VOUT2
5VFB
RAMBUSOUT
RAMBUSFB
GND
SS
PWROK
SLP_S5#
PRODUCT SPECIFICATION
Pin Definitions
Pin Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Pin Name
QCAP
PUMP
SDRAMOUT
SDRAMFB
5VSTBY
3VOUT1
3VOUT2
3VFB
PWRGD
SLP_S3#
SLP_S5#
PWROK
SS
GND
RAMBUSFB
RAMBUSOUT
5VFB
5VOUT2
5VOUT1
VCCP
Pin Function Description
Charge pump cap. Attach flying capacitor between this pin and PUMP to
generate high voltage from standby power.
Charge pump switcher.
3.3V SDRAM gate control. Attach this pin to a transistor powering 3.3V SDRAM
from the 3.3V main supply.
3.3V SDRAM voltage feedback. Pin 4 is used as the input for the voltage
feedback control loop for 3.3V SDRAM, and also sources 3.3V SDRAM in
standby.
5V Standby. Apply +5V standby on this pin to run the circuit in standby mode.
3.3V main gate control. Attach this pin to a transistor powering 3.3V dual from
the 3.3V main supply.
3.3V standby gate control. Attach this pin to a transistor powering 3.3V dual
from the 5V standby supply.
3.3V voltage Feedback. Pin 8 is used as the input for the voltage feedback
control loop for 3.3V dual.
Power Good. Open collector output is high when all outputs are valid.
SLP_S3#. Control signal governing the Soft Off state S3. Internal current source
pulls this line high if left open.
SLP_S5#. Control signal governing the Soft Off state S5. Internal current source
pulls this line high if left open.
PWROK. Control signal for switches. Internal current source pulls this line high if left
open.
Softstart. Attach a capacitor to this pin to determine the softstart rate.
Ground. Connect this pin to ground.
2.5V feedback. Pin 15 is used as the input for the voltage feedback control loop for
2.5V dual (RAMBUS), and also sources 2.5V dual in standby.
2.5V base drive control. Attach this pin to an NPN transistor powering 2.5V dual
(RAMBUS) from the 3.3V main supply.
5V Voltage Feedback. Pin 17 is used to sense undervoltage to protect the 5V dual
from overcurrent.
5V standby gate control. Attach this pin to a transistor powering 5V dual from the
5V standby supply.
5V main gate control. Attach this pin to a transistor powering 5V dual from the 5V
main supply.
Main Power. Apply +12V through a diode on this pin to run the circuit in normal
mode. Bypass with a 0.1µF capacitor. When 12V is not present, this pin produces
voltage doubled 5V standby.
2
REV. 1.0.2 9/14/01
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