View CMPWR161_428598.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

CMPWR161 Micropower, Low Noise 4.75V/150mA LDO Regulator
Features
* * * * * * * * * * * Excellent power supply ripple rejection for VIN-VOUT down to 110mV Excellent power supply ripple rejection in audible band (20Hz to 20KHz) Very low dropout voltage (110mV at 150mA) Fast transient response minimizes glitches in audible band. Low noise in audible band Guaranteed to deliver 150mA output at 4.75V output Low quiescent current--300A typical "Zero" current shutdown mode 5205 compatible pin-out 5-lead SOT-23 package Lead-free version available
Product Description
The CMPWR161 is a micropower, low noise regulator designed specifically to filter out noise from a 5V digital supply making it ideal for noise-sensitive analog applications. The CMPWR161 delivers up to 150mA at a fixed 4.75V output. A bandgap reference bypass pin (BYP) provides low noise operation when an external capacitor is connected between this pin and ground. In addition, the CMPWR161 features an enable pin (EN) which allows the regulator to be placed into shutdown mode supporting low power and battery applications. The CMOS regulator features low quiescent current even at full load. The CMPWR161 is housed in a 5-pin SOT-23 package, which is ideal for space critical applications. It is available with optional lead-free finishing.
Applications
* * * * * * 5V analog supply for audio CODEC Low noise power supply ideal for audio use Notebook computers Sound cards Motherboards Set top boxes
Typical Application Circuit
Simplified Electrical Schematic
VIN VOUT
CMPWR161
5V Supply Voltage GND VIN VOUT + CIN EN + BYP 1F 10nF GND 100nF C + OUT 10F VOUT
4.75V@ 150mA
EN
BYP
VREF 4.75V
+
10kHz
-
GND
(c) 2004 California Micro Devices Corp. All rights reserved. 01/14/04
430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214
L Fax: 408.263.7846
L
www.calmicro.com
1
CMPWR161
PACKAGE / PINOUT DIAGRAM
Top View
VIN 1 5 VOUT
161Y/R
4 BYP
GND
2
EN
3
5-pin SOT23
Note: This drawing is not to scale.
PIN DESCRIPTIONS
PIN 1 NAME VIN DESCRIPTION Positive input voltage for the regulator. The internal loading on this input is typically 300A whenever the regulator is enabled and less than 1A when the regulator is disabled. If this input is greater than 2 inches from the main input filter, a 1F ceramic capacitor is recommended for additional filtering. The negative reference for all voltages. Enable/shutdown input. When EN is asserted high (VEN 2V), the regulator is enabled. When EN is asserted low, the regulator is shutdown (VOUT=0V). This input is compatible with CMOS logic. Reference bypass pin. This input is used to connect an external capacitor (CBYP) for noise reduction and to maximize power supply ripple rejection. A 10nF capacitor is recommended for this function. The regulated voltage output. An output capacitor of 10F is recommended to provide the necessary phase compensation for the regulator and also minimize any transient disturbances.
2 3 4
GND EN BYP
5
VOUT
Ordering Information
PART NUMBERING INFORMATION
Standard Finish Pins 5 Package SOT23-5 Ordering Part Number1 CMPWR161Y Part Marking 161Y Lead-free Finish Ordering Part Number1 CMPWR161R Part Marking 161R
Note 1: Parts are shipped in Tape & Reel form unless otherwise specified.
(c) 2004 California Micro Devices Corp. All rights reserved.
2
430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214
L Fax: 408.263.7846
L
www.calmicro.com
01/14/04
CMPWR161
Specifications
ABSOLUTE MAXIMUM RATINGS
PARAMETER ESD Protection (HBM) Pin Voltages VIN VOUT VEN Storage Temperature Range Operating Temperature Range Ambient Junction RATING +2000 [GND - 0.5] to [+6.5] [GND - 0.5] to [+6.5] [GND - 0.5] to [VCC+0.5] -40 to +150 0 to +70 0 to +125 UNITS V V V V C C C
STANDARD OPERATING CONDITIONS
PARAMETER VIN Ambient Operating Temperature Range Load Current COUT RATING 4.9 to 5.5 0 to +70 0 to 150 10 +10% UNITS V C mA F
ELECTRICAL OPERATING CHARACTERISTICS(SEE NOTE 1)
SYMBOL VOUT VR LOAD VR LINE VDO IIN IGND PARAMETER Regulator Output Voltage Load Regulation Line Regulation xx Regulator Dropout Voltage VIN Current Ground Current CONDITIONS 0mA < ILOAD < 150mA 5mA < ILOAD < 150mA, VIN=5.0V ILOAD = 5mA, 4.9V < VCC< to 5.5V Minimum VIN -VOUT for ILOAD= 150mA Shutdown (Regulator Disabled), VOUT tied to GND Regulator Enabled, ILOAD= 0mA Regulator Enabled, ILOAD= 150mA RREJ Ripple Rejection VIN -VOUT = 150mV, ILOAD= 150mA, CBYP = 10nF =100Hz =10kHz 2.0 0.5 MIN 4.65 TYP 4.75 0 1 110 0.01 300 300 250 10 500 500 MAX 4.85 UNITS V mV mV mV A A A
xx
42 25
xx
dB dB V V
VIH VIL
EN Input Logic High Threshold EN Input Logic Low Threshold
Note 1: Operating Characteristics are over Standard Operating Conditions unless otherwise specified.
(c) 2004 California Micro Devices Corp. All rights reserved. 01/14/044
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
L Tel: 408.263.3214
L
Fax: 408.263.7846
L
www.calmicro.com
3
CMPWR161
Performance Information
CMPWR161 Typical DC Characteristics (nominal conditions unless specified otherwise) Nominal Conditions: CIN=10F & 0.1F, COUT=10F & 0.1F, CBYP=0.01F, VIN=5.0V, ILOAD=5mA.
Dropout Voltage vs. Load (VOUT=4.70V)
125 100 75 50 25 0 0 50 100 Load Current [mA] 150
Load Regulation
4.80 4.78
Output Voltage [V]
Dropout [mV]
4.76 4.74 4.72 4.70 0 50 100 150 200 Load Current [mA] 250 300
Line Regulation (5mA Load)
4.78 4.77
Output Voltage [V]
Line Regulation (150mA Load)
4.78 4.77
Output Voltage [V]
4.76 4.75 4.74 4.73 4.72 4.75 4.80 4.85 4.90 4.95 5.00 5.05 5.10 Supply Voltage [V]
4.76 4.75 4.74 4.73 4.72 4.75 4.80 4.85 4.90 4.95 5.00 5.05 5.10 Supply Voltage [V]
Supply Current vs. Voltage (EN = VIN)
500 400 300 200 100 0 4.75
Ground Current vs. Output Load
500
Ground Current [uA]
400 300 200 100 0
Supply Current [uA]
5.00 5.25 Supply Voltage [V]
5.50
0
50 100 Load Current [mA]
L www.calmicro.com
150
(c) 2004 California Micro Devices Corp. All rights reserved.
4
430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214
L Fax: 408.263.7846
01/14/04
CMPWR161
Performance Information (cont'd)
CMPWR161 Transient Characteristics (nominal conditions unless specified otherwise)
1mA-150mA Load Step (VIN -VOUT=250mV) 4.8V - 5.2V Line Step (5mA Load)
Enable Response (no BYP cap)
Disable Response (no BYP cap)
Enable Response (CBYP = 10nF)
Disable Response (CBYP = 10nF)
EN
(c) 2004 California Micro Devices Corp. All rights reserved. 01/14/044
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
L Tel: 408.263.3214
L
Fax: 408.263.7846
L
www.calmicro.com
5
CMPWR161
Performance Information (cont'd)
CMPWR161 Supply Rejection (nominal conditions with 10mV peak-to-peak sine wave on VIN and ILOAD=150mA)
Ripple Rejection vs. Frequency (VIN-VOUT=250mV)1
70
Ripple Rejection vs. Frequency (VIN-VOUT=125mV)1
70
5mA Load
Ripple Rejection (dB)
60 50 40 30 20 10 0 100
Ripple Rejection (dB)
60 50 40 30 20 10 0 100
5mA Load
150mA Load
150mA Load
1000
10000
1000
10000
Frequency 100Hz Ripple Rejection vs. Dropout (150mA)
70
Frequency
10kHz Ripple Rejection vs. Dropout (150mA)
70 60 50 40 30 20 10 0
Ripple Rejection (dB)
50 40 30 20 10 0 0 50 100 150 200 V IN - V OUT [mV] 250 300
Ripple Rejection (dB)
60
0
100
200
300
VIN - VOUT [mV]
Note:1 VIN - VOUT is measured from the DC operating point on the output to the DC operating point on the input.
(c) 2004 California Micro Devices Corp. All rights reserved.
6
430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214
L Fax: 408.263.7846
L
www.calmicro.com
01/14/04
CMPWR161
Performance Information (cont'd)
CMPWR161 Typical Thermal Characteristics (nominal conditions unless specified otherwise)
VOUT vs. Temperature (5mA Load)
4.800
VOUT vs. Temperature (150mA Load)
4.800
4.775
VOUT [V] VOUT [V]
4.775
4.750
4.750
4.725
4.725
4.700 25 50 75 100 o Temperature [ C] 125
4.700 25 50 75 100 Temperature [o C] 125
Dropout Voltage vs. Load
150 125
Dropout [mV]
70oC 100 75 125oC 50 25 0 0 50 100 Load Current [mA] 150 25oC
(c) 2004 California Micro Devices Corp. All rights reserved. 01/14/044
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
L Tel: 408.263.3214
L
Fax: 408.263.7846
L
www.calmicro.com
7
CMPWR161
Mechanical Details
SOT23-5 Mechanical Specifications Dimensions for CMPWR161 device packaged in 5-pin SOT23 package are presented below. For complete information on the SOT23-5 package, see the California Micro Devices SOT23 Package Information document.
5
Mechanical Package Diagrams
TOP VIEW
e1
e
4
E1 E
1 2 3
PACKAGE DIMENSIONS
Package Pins Dimensions A A1 b c D E E1 e e1 L L1 # per tape and reel Millimeters Min -0.00 0.30 0.08 2.75 2.60 1.45 Max 1.45 0.15 0.50 0.22 3.05 3.00 1.75 Min -0.0000 0.0118 0.0031 0.1083 0.1024 0.0571 SOT23-5 (JEDEC name is MO-178) 5 Inches Max 0.0571 0.0059 0.0197 0.0087 0.1201 0.1181 0.0689
END VIEW SIDE VIEW
b
D
A
A1
0.95 BSC 1.90 BSC 0.30 0.60 0.60 REF
0.0374 BSC 0.0748 BSC 0.0118 0.0236 L1 L 0.0236 REF 3000 pieces c
Package Dimensions for SOT23-5.
(c) 2004 California Micro Devices Corp. All rights reserved.
8
430 N. McCarthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214
L Fax: 408.263.7846
L
www.calmicro.com
01/14/04

▲Up To Search▲

Price & Availability of CMPWR161

	To Download CMPWR161 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .