|
|
PDF MP6401 Data sheet ( Hoja de datos )
| Número de pieza | MP6401 | |
| Descripción | 300mA LDO Linear Regulator | |
| Fabricantes | MPS | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de MP6401 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
|
No Preview Available !
MP6401
The Future of Analog IC Technology
300mA LDO Linear Regulator with
Integrated Reset Circuit
DESCRIPTION
The MP6401 combines a low-dro pout linear
regulator with an inte grated rese t circuit. It
operates from a 2.5V to 5.5V input voltage and
regulates th e output voltage with 2 % accura cy
at 1.8V, 2.5V, 3.3V or adjustable value. It
delivers up to 300mA of load current. By
combining an LDO linear regulator with a reset
circuit, these products can reduce cost and save
space in co mpact portable devices such as cell
phones, smart phon es, PDAs, PMPs, and
portable GPS devices.
The MP640 1 provides a push-pull, active-low
that asserts when the regulator out put voltage
drops below the microprocessor supply
threshold (- 7.5% or -12.5% of no minal output
voltage). Four reset delay time, 3.125ms, 25ms,
200ms and 1580ms can be selected. The
MP6401 is available in 3mmx3 mm T QFN8,
2mmx2mm TQFN6 and TSOT packages and is
specified for operation from -40°C to 85°C.
TYPICAL APPLICATION
2.5V to 5.5V
FEATURES
• Low Quiescent Current of 80 μA for Battery
Powered Equipment
• Low 114mV Dropout at 300mA Output
• ±2 ％ Accurate Output Voltage
• Fixed Output Voltage Options of 1. 8V, 2.5V
or 3.3V
• Adjustable Output Voltage from 1. 229V to
5V Using an External Resistor Divider
• 15 μVRMS Ultra Low Noise Output
• PSRR: 57dB at 1kHz
• Input Reverse Current, Thermal and
Short-Circuit Protection
• Microprocessor Reset with Four Delay time
Options
• Push-Pull RESET
APPLICATIONS
• Smart Phone and Cell Phone
• Portable GPS Devices
• Wireless Devices
• PDA and PMP
All MPS parts are lead-free and adhere to t he RoHS directive. For MPS green
status, please visit MPS website un der Q uality Assurance. “MPS” a nd “ The
Future of An alog IC Technology” a re Re gistered T rademarks of Mo nolithic
Power Systems, Inc.
IN
OUT
VI/O
CIN
MP6401
ADJ
R1
uP
EN RESET
GND
COUT
RESET
GND
MP6401 Rev. 1.0
9/7/2012
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
1
http://www.Datasheet4U.com
1 page  
MP6401 – 300mA LDO LINEAR REGULATOR WITH INTEGRATED RESET IC
ELECTRICAL CHARACTERISTICS (continued)
VIN = (VOUT + 0.5V) or +2.5V, whichever is greater, COUT = 3.3µF. Typical Value at TA = +25°C unless
otherwise noted.
Parameter
Symbol Condition
Min Typ Max Unit
RESET Output Voltage
Push-Pull
VOUT ≥ 1.0V, ISINK = 50µA,
VOL
RESET asserted
VOUT ≥ 1.5V, ISINK = 3.2mA,
RESET asserted
0.3
0.4 V
VOH
VOUT ≥ 2.0V, ISOURCE = 500µA,
RESET deasse rted
0.8VOUT
Notes:
5) Dropout Voltage is defined as the input to output differential when the output voltage drops 100mV below its nominal value.
MP6401 Rev. 1.0
9/7/2012
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
5
5 Page 
MP6401 – 300mA LDO LINEAR REGULATOR WITH INTEGRATED RESET IC
OPERATION
The MP6401 integrates a low noise, low dropout,
low quiescent current linear regulator and a
microprocessor reset circuit. It operates from a
2.5V to 5.5V input voltage and regulates the fixed
output voltage with 2% accuracy at 1.8V, 2.5V,
3.3V or adjustable value. The MP6401 can supply
to 300mA of load current. The internal reset
circuit is used to monitor the regulator output
voltage. The RESET asserts when the re gulator
output voltage drops below the standard
microprocessor supply threshold.
Linear Regulator
The MP6401 can output a fixed voltage (1.8V,
2.5V, 3.3V options) or adjustable voltage which
ranges from 1.25V to 5V with 2.0% accuracy by
operating from a +2.5V to +5.5V input. The
MP6401 can supply up to 300mA of load current.
When ADJ is connected to GND, a fixed output
voltage is selected. Connecting ADJ pin to the tap
of external resistor divider from the OUT to GND,
adjustable output voltage is selected. The typical
ADJ connection is shown in Fig 3.
2.5V to 5.5V
IN
OUT
MP6401
R1
EN ADJ
GND
R2
Figure 3—Output Voltage Adjusted with
Resistor Divider
Reset Function
The reset circuit monitors the OUT voltage.
RESET asserts while OUT voltage falls below its
threshold. Two OUT voltage thresholds (-7.5%
and -12.5%) are available. The power-up,
power-down, and brownout conditions will make
RESET asserted . So MP640 1 monitor circuit
could right control the microprocessor. RESET
asserts when the input and output voltage below
their thresholds. RESET asserts when EN is a
low logic. When the assert trigger condition is
removed, RESET will deassert after a fixed delay
time. Four o ptions of reset delay-time (see Table
3) can be selected.
EN Shutdown
The MP640 1 can be switched ON or OFF by a
logic input at the EN pin. A high voltage at this pin
will turn the device on. When the EN pin is low,
the regulator output is o ff and the supply current
is reduced. Generally, t he EN pin s hould be tied
to IN to keep the regu lator output always on. Do
not float the EN pin.
Reverse Leakage Protection
An internal circuit monitors VIN and VOUT to control
the reverse leakage current from OUT to IN.
While VIN decreases lo wer than V OUT and EN s till
hold logic h igh, the mo nitor circuit turns off the
pass element and its parasitic diode. Typically the
reverse leakage current through pass element
decreases t o 0.1uA. RESET deasserts un til V IN
returns greater than V OUT and V OUT is higher tha n
its preset threshold.
MP6401 also can work with backu p battery at
OUT after input power supply is removed as
shown in Fig 4. When input power supply is
removed, RESET asserts. The backup battery
will power the device through two external diodes
and typically the current from OUT to ground is
40uA. So, the power supply removing does not
erase RAM content if the voltage of backup
battery is greater than memory’s standby
specification. The backup battery can be replaced
by a super-cap, while the diode connected with
battery is changed to a current-limiting resistor.
Removable
IN OUT
MP6401
EN
3.3uF
Backup
Battery
uP MEMORY
Figure 4— Maintain Memory with Backup
Battery
Current Limit
The MP6401 includ es a current limit structur e
which monit ors and co ntrols pa ss element gate
voltage limiting the guar anteed maxi mum output
current to 500mA.
MP6401 Rev. 1.0
9/7/2012
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet MP6401.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| MP6400 | Low Quiescent Current Programmable-Delay Supervisory Circuit | MPS |
| MP6401 | 300mA LDO Linear Regulator | MPS |
| MP6402 | Dual High PSRR 500mA Linear Regulator | MPS |
| MP6403 | HIGH POWER SWITCHING APPLICATION 3 PHASE MOTOR AND BIPOLAR DRIVE OF PULSE MOTOR |  Toshiba Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |