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BD3500FVM Datenblatt(PDF) 1 Page - Rohm

Teilenummer BD3500FVM
Bauteilbeschribung  Nch FET Ultra LDO Controllers for PC Chipsets
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Hersteller  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BD3500FVM Datenblatt(HTML) 1 Page - Rohm

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www.rohm.com
2010.05 - Rev.A
© 2010 ROHM Co., Ltd. All rights reserved.
High Performance Regulators for PCs
Nch FET Ultra LDO Controllers
for PC Chipsets
BD3504FVM,BD3500FVM,BD3501FVM,BD3502FVM
Description
The BD3500/01/02/04FVM is an ultra-low dropout linear regulator controller for chipset that can achieve ultra-low voltage
input to ultra-low voltage output. By using N-MOSFET for external power transistor, the controller can be used at ultra-low
I/O voltage difference up to voltage difference generated by ON resistance. In addition, because best suited power
transistor can be chosen in accord with the output current, downsizing and cost reduction of the set can be achieved.
Because by reducing the I/O voltage difference, large current output is achieved and conversion loss can be reduced,
switching power supply can be replaced. BD3500/01/02/04FVM does not need any choke coil, diode for rectification and
power transistor which are required for switching power supply, total cost of the set can be reduced and compact size can be
achieved for the set. Using external resistors, optional output from 0.65V to 2.5V can be set. In addition, since voltage
output start-up time can be adjusted by using the NRCS terminal, it is possible to flexibly meet the power supply sequence of
the set.
Features
1) Reduced rush current by NRCS
2) Built-in driver for external Nch h transistor
3) Adoption of MSOP8 package: 2.9 x 4.0 x 0.9 (mm)
4) Built-in timer latch short protection circuit
5) Built-in low input maloperation prevention circuit
6) Output voltage variable type
7) Built-in overheat protection circuit
Applications
Mobile PC, desktop PC, digital home appliances
Line up matrix
Parameter
BD3500FVM
BD3501FVM
BD3502FVM
BD3504FVM
Output Voltage
1.8V (Fix)
1.5V (Fix)
1.2V (Fix)
Variable(0.65~2.5V)
NRCS
(Soft start)
(Independent Setting)
(Independent Setting)
(Independent Setting)
(Same Timer Latch)
Timer latch short
protection circuit
(Independent Setting)
(Independent Setting)
(Independent Setting)
(Same NRCS)
VIN UVLO
Hysterisis
Hysterisis
Hysterisis
Detected at start-up only
(set by external resistor)
External FET
GATE Drive Current
+1/-3mA
+1/-3mA
+1/-3mA
+3/-3mA
No.10030EAT29


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