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PSRR LDO. MIC5280 Datasheet

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PSRR LDO. MIC5280 Datasheet






MIC5280 LDO. Datasheet pdf. Equivalent




MIC5280 LDO. Datasheet pdf. Equivalent





Part

MIC5280

Description

High PSRR LDO



Feature


MIC5280 25mA, 120V, Low IQ, High PSRR LD O General Description Features The M IC5280 is a high performance low dropou t regulator, offering a very low noise output with a very wide input voltage o perating range, up to 120V DC input vol tage. Ideal for high input voltage appl ications such as industrial and telecom , the MIC5280 offers 2% initial accurac y, extremely high .
Manufacture

Micrel Semiconductor

Datasheet
Download MIC5280 Datasheet


Micrel Semiconductor MIC5280

MIC5280; power supply rejection ratio (PSRR > 80d B) and low ground current (typically 31 µA). The MIC5280 can also be put into a zero-off-mode current state, drawing a minuscule amount of current when disa bled. The MIC5280 has a very wide input voltage range, with a DC rating from 24V to 120V. The MIC5280 is optimized for line transient response, making it ideal for harsh envi.


Micrel Semiconductor MIC5280

ronment applications. • Wide input vo ltage range: 4.5V to 120V DC • Very l ow quiescent current: 31µA typical • 25mA guaranteed output current • Adj ustable output from 1.215V to 5V • DC voltage protection down to -24V • Ab ility to withstand up .


Micrel Semiconductor MIC5280

.

Part

MIC5280

Description

High PSRR LDO



Feature


MIC5280 25mA, 120V, Low IQ, High PSRR LD O General Description Features The M IC5280 is a high performance low dropou t regulator, offering a very low noise output with a very wide input voltage o perating range, up to 120V DC input vol tage. Ideal for high input voltage appl ications such as industrial and telecom , the MIC5280 offers 2% initial accurac y, extremely high .
Manufacture

Micrel Semiconductor

Datasheet
Download MIC5280 Datasheet




 MIC5280
MIC5280
25mA, 120V, Low IQ, High PSRR LDO
General Description
Features
The MIC5280 is a high performance low dropout regulator,
offering a very low noise output with a very wide input
voltage operating range, up to 120V DC input voltage.
Ideal for high input voltage applications such as industrial
and telecom, the MIC5280 offers 2% initial accuracy,
extremely high power supply rejection ratio (PSRR >
80dB) and low ground current (typically 31µA). The
MIC5280 can also be put into a zero-off-mode current
state, drawing a minuscule amount of current when
disabled.
The MIC5280 has a very wide input voltage range, with a
DC rating from –24V to 120V. The MIC5280 is optimized
for line transient response, making it ideal for harsh
environment applications.
Wide input voltage range: 4.5V to 120V DC
Very low quiescent current: 31µA typical
25mA guaranteed output current
Adjustable output from 1.215V to 5V
DC voltage protection down to -24V
Ability to withstand up to +120V DC at the input
Stable with ceramic output capacitors
Ultra High PSRR > 80dB for RF applications
High output accuracy
– ± 2% initial accuracy
– ± 3% over temperature (–40°C to +125°C)
Thermal shutdown and current limit protection
The MIC5280 has an operating junction temperature range
of –40°C to +125°C and is available in an adjustable
output voltage version in a lead-free (RoHS compliant) 8-
pin EPAD SOIC packaging.
Thermally efficient 8-pin EPAD SOIC package
Applications
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Industrial applications
Remote keyless entry power supply
Telecom applications
Off-line power supplies
___________________________________________________________________________________________________________
Typical Application
Telecom Application
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
January 2009
M9999-012209-A




 MIC5280
Micrel, Inc.
Ordering Information
Part Number
MIC5280YME
Voltage
Adj.
Temperature Range
–40° to +125°C
Package
8-Pin EPAD SOIC
MIC5280
Lead Finish
Pb-Free
Pin Configuration
CBYP 1
VOUT 2
ADJ 3
GND 4
8 VIN
7 NC
6 NC
5 EN
8-Pin EPAD SOIC (ME)
Pin Description
Pin Number
1
2
3
4
5
6, 7
8
EP
Pin Name
CBYP
VOUT
ADJ
GND
EN
NC
VIN
Pin Function
Connect 10µF capacitor. Increases PSRR when VIN 6.5V.
Regulator Output Pin. Connect 2.2µF for better stable operation.
Connect pin 3 to external resistor divider to set VOUT.
Ground.
Enable pin. Enable Low turns part OFF, Enable High turns part ON.
Not internally connected.
Supply Input pin. Supply (Input): -24V to 120V input voltage.
Exposed Pad – Connect to Ground plane trace.
January 2009
2 M9999-012209-A




 MIC5280
Micrel, Inc.
MIC5280
Absolute Maximum Ratings(1)
Supply Voltage (VIN) ..................................... –24V to +120V
Enable Voltage (VEN)...................................... –1V
Power Dissipation (PD) ........................... Internally
to +120V
Limited(3)
Max Reflow Temperature (per IPC/JEDEC 20°C) ..... 260°C
Junction Temperature (TJ) ........................ –40°C to +150°C
ESStoDraRgeatTinegm(4)p..e..r.a..t.u..r.e...(.T..S..)....................................................–..6..5..°.C....t.o...+..1..5. 20k°CV
Operating Ratings(2)
Supply Voltage (VIN) ...................................... 4.5V to +120V
Enable Voltage (VEN)........................................ 0V to +120V
Junction Temperature (TJ) ........................ –40°C to +125°C
Junction Thermal Resistance
EPAD SOIC-8 (θJA) ............................................41°C/W
Electrical Characteristics(5)
VIN = 12V; VEN = 2V; COUT = 2.2µF; CBYP = 10µF; IOUT = 100µA; TJ = 25°C, bold values indicate –40°C to +125°C, unless
noted.
Parameter
Output Voltage Accuracy
ADJ Pin Voltage
Line Regulation(6)
Load Regulation(7)
Dropout Voltage
Ground Pin Current
Ground Pin Current in Shutdown
Ripple Rejection
Current Limit
IDD Reverse Battery
IOUT Reverse Current
ADJ Pin Current
Output Voltage Noise
Enable Input
Enable Input Voltage
Enable Input Current
Turn-on Time
Condition
Variation from nominal VOUT
Variation from nominal VOUT, –40°C to +125°C
ΔVIN = 6.5V to 120V
IOUT = 100µA to 25mA
IOUT = 100µA; VIN = 4.5V; Adjust Pin = 0V
IOUT = 10mA; VIN = 4.5V; Adjust Pin = 0V
IOUT = 25mA; VIN = 4.5V; Adjust Pin = 0V
IOUT = 100µA
IOUT = 25mA
VEN 0.3V
VEN 0.3V, –40°C to +125°C
f = up to 1kHz
VOUT = 0V; VIN = 4.5V
VOUT = 0V; VIN = 14.4V
VIN = –24V; VEN = 0.3V
VIN = 0V; VOUT = 5V; VEN = 0.3V
Logic Low
Logic High
VEN 0.3V; VIN = 12V
VEN 2.0V; VIN = 12V
VIN = 4.5V; VEN = 120V
COUT = 2.2µF; IOUT = 25mA
Min Typ
–2
–3
1.219
–0.5 0.04
–0.5 0.2
0 430
0 800
0 1100
0 31
0 260
0 0.02
0
80
40 70
70
0.4 0.03
3
3.3
120
Max
+2
+3
0.5
0.5
700
1000
1500
50
400
1
5
100
50
10
Units
%
%
V
%
%
mV
mV
mV
µA
µA
µA
µA
dB
mA
mA
µA
µA
nA
µVRMS
2.0
0 0.02
0 0.12
0 0.15
0.1 1
0.3
1
1
10
V
V
µA
µA
µA
ms
January 2009
3 M9999-012209-A



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