CA48 California Micro Devices Corporation, CA48 Datasheet

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CA48

Manufacturer Part Number
CA48
Description
Manufacturer
California Micro Devices Corporation
Datasheet

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Features
Applications
© 2004 California Micro Devices Corp. All rights reserved.
12/22/04
Typical Application Circuit
EN
IN
Linear LDO regulator with 4.75V output
150mV maximum dropout at 150mA load
Fast power-up with bypass capacitor
"Zero" current in Shutdown mode
Lead-free version available
Consumer and personal electronics
Ideal for powering audio codecs
500mA output current capability
500mV maximum dropout voltage at full load
Excellent line and load regulation
Stable with low ESR output capacitor
Ultra low noise with optional bypass capacitor
Thermal Overload Protection
Foldback Current Limiting Protection
Reverse current protection
Notebook computers
- 500mA peak in SOT-23 package
430 N. McCarthy Blvd., Milpitas, CA 95035-5112
C
Micropower, 4.75V/500mA Low Noise CMOS LDO Regulator
IN
+
1
µ
F
IN
EN
CM3016-48
GND
OUT
BYP
100
C
BYP
n
F
+
C
OUT
+
2.2
µ
F
Tel: 408.263.3214
OUT
GND
BYP
Simplified Electrical Schematic
Product Description
The CM3016-48 is a CMOS linear voltage regulator with
low quiescent current, very low drop out voltage and better
than 1% initial output voltage accuracy. The quiescent cur-
rent is typically 150 µ A at light loads and only 165 µ A at
500mA. This is 5% more efficient than equivalent Bi-CMOS
devices that can waste up to 25mA at 500mA load. The
CM3016-48 can maintain load regulation for peak currents
up to 500mA, which is useful for supplying inrush currents
during power-up and transient conditions. Continuous out-
put current is limited by package type and board layout.
A dedicated control input (EN, Active High) has been
included for power-up sequencing flexibility. When this input
is taken low, the regulator is disabled. In this state, the sup-
ply current will drop to near zero. The device also features
reverse current protection. This protects the device by
blocking the pass transistors parasitic diode when the out-
put voltage is forced higher than the input.
For low noise performance and increased power supply rip-
ple rejection a noise bypass capacitor can be connected to
the BYP pin. Connecting this capacitor will not significantly
delay the speed of power-up.
The CM3016-48 is fully protected, offering both overload
current limiting and high temperature thermal shutdown. To
reduce board cost and layout size, the CM3016 was
designed to be stable with or without an output capacitor.
This includes tiny, low ESR ceramic capacitors.
The CM3016-48 is housed in a 5-pin SOT23 package and
is ideal for space critical applications. It is available with
optional lead-free finishing.
EN
IN
Power-Up
Fast
Fax: 408.263.7846
V
REF
Thermal Overload
Enable Control
+
-
AMP
Current
Limit
EN
Reverse Current
Protection
www.calmicro.com
CM3016-48
OUT
V2.XX
1

Related parts for CA48

CA48 Summary of contents

Page 1

Micropower, 4.75V/500mA Low Noise CMOS LDO Regulator Features • Linear LDO regulator with 4.75V output • 500mA output current capability - 500mA peak in SOT-23 package • 500mV maximum dropout voltage at full load • 150mV maximum dropout at 150mA ...

Page 2

... Top View GND 5-pin SOT23 PIN DESCRIPTIONS PART NUMBERING INFORMATION Standard Finish Ordering Part 1 Number Part Marking CM3016-48ST CA48 ● Tel: 408.263.3214 CM3016-48 OUT BYP Lead-free Finish Ordering Part 1 Number Part Marking CM3016-48SO ● ● Fax: 408.263.7846 www.calmicro.com CR48 V2.xx 12/22/04 ...

Page 3

Specifications PARAMETER Pin Voltages IN EN OUT Storage Temperature Range Operating Temperature Range Ambient Junction Power Dissipation (Notes 1,2) Note 1: The CM3016-48 contains a thermal overload circuit that automatically disables the device thereby preventing excessive junction temperature. When the ...

Page 4

Specifications (continued) ELECTRICAL OPERATING CHARACTERISTICS SYMBOL PARAMETER V Output Voltage OUT V Line Regulation (see Note 4) R LINE V Load Regulation R LOAD R Dropout Resistance DROP I Ground Current GND V Enable Voltage EN V Disable Voltage DIS ...

Page 5

Performance Information Typical DC Characteristics (nominal conditions unless otherwise specified, CM3016-48ST Only 2.2uF 2.2uF OUT Load Regulation 4.800 4.775 4.750 4.725 4.700 0 100 200 300 400 500 600 700 LOAD CURRENT [mA] ...

Page 6

Performance Information (cont’d) Transient Characteristics (nominal conditions unless otherwise specified, CM3016-48ST Only 2.2uF 2.2uF OUT BYP Load Step Response Line Step Response Enable Response 6 430 N. McCarthy Blvd., Milpitas, CA 95035-5112 = 0.1uF, ...

Page 7

Performance Information (cont’d) Power Supply Ripple Rejection (nominal conditions unless otherwise specified, CM3016-48ST Only 1uF 5.0V, Load = 5mA, PSRR measured with 10mV pk-pk sin wave PSRR (VIN-VOUT = 500mV ...

Page 8

Performance Information (cont’d) Power Supply Ripple Rejection (nominal conditions unless otherwise specified, CM3016-48ST Only 1uF 5.0V, Load = 5mA, PSRR measured with 10mV pk-pk sin wave PSRR (VIN-VOUT = 150mV ...

Page 9

Performance Information (cont’d) Typical Thermal Characteristics (nominal conditions unless otherwise specified, CM3016-48ST Only 2.2uF 2.2uF OUT VOUT vs. Temperature (200mA Load -10 -20 -30 -40 -50 -40 ...

Page 10

Mechanical Details The CM3016-48 is available in a 5-pin SOT23 pack- age. Dimensions for this package is presented below. SOT23-5 Mechanical Specifications Dimensions for CM3016-48ST/SO devices packaged in a 5-pin SOT23 package are presented below. For complete information on the ...

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