Datasheet

ManualsBrandsANALOG DEVICES ManualsPMICsPMIC - LDO voltage regulator Positive, fixed MSOP 8

High Accuracy Ultralow I

, 300 mA,

anyCAP Low Dropout Regulator

ADP3333

Rev. B

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FEATURES

High accuracy over line and load: ±0.8% @ 25°C,

±1.8% over temperature

Ultralow dropout voltage: 230 mV (maximum) @ 300 mA

Requires only C

OUT

= 1.0 µF for stability

anyCAP is stable with any type of capacitor (including MLCC)

Current and thermal limiting

Low noise

Low shutdown current: < 1 µA

2.6 V to 12 V supply range

−40°C to +85°C ambient temperature range

Ultrasmall 8-lead MSOP package

APPLICATIONS

Cellular phones

PCMCIA cards

Personal digital assistants (PDAs)

DSP/ASIC supplies

FUNCTIONAL BLOCK DIAGRAM

THERMAL

PROTECTION

ADP3333

OUT

GND

BAND GAP

REF

DRIVER

02615-001

Figure 1.

GENERAL DESCRIPTION

The ADP3333 is a member of the ADP333x family of precision

low dropout (LDO) anyCAP® voltage regulators. Pin compatible

with the MAX8860, the ADP3333 operates with a wider input

voltage range of 2.6 V to 12 V and delivers a load current up to

300 mA. ADP3333 stands out from other conventional LDOs

with a novel architecture and an enhanced process that enables

it to offer performance advantages over its competition. Its

patented design requires only a 1.0 μF output capacitor for

stability. This device is insensitive to output capacitor equivalent

series resistance (ESR) and is stable with any good quality

capacitor, including ceramic (MLCC) types for space-restricted

applications. The ADP3333 achieves exceptional accuracy of

±0.8% at room temperature and ±1.8% over temperature, line,

and load variations. The dropout voltage of the ADP3333 is

only 140 mV (typical) at 300 mA. This device also includes a

safety current limit, thermal overload protection, and a shutdown

feature. In shutdown mode, the ground current is reduced to

less than 1 μA. The ADP3333 has ultralow quiescent current,

70 μA (typical) in light load situations.

ADP3333

GND

OUT

OFF

OUT

NC = NO CONNECT

OUT

1µF

02615-002

Figure 2. Typical Application Circuit

Summary of content (12 pages)

PAGE 1
High Accuracy Ultralow IQ, 300 mA, anyCAP Low Dropout Regulator ADP3333 FEATURES FUNCTIONAL BLOCK DIAGRAM Q1 IN OUT ADP3333 THERMAL PROTECTION R1 CC DRIVER gm R2 SD BAND GAP REF 02615-001 High accuracy over line and load: ±0.8% @ 25°C, ±1.8% over temperature Ultralow dropout voltage: 230 mV (maximum) @ 300 mA Requires only COUT = 1.0 µF for stability anyCAP is stable with any type of capacitor (including MLCC) Current and thermal limiting Low noise Low shutdown current: < 1 µA 2.
PAGE 2
ADP3333 TABLE OF CONTENTS Features .............................................................................................. 1 Theory of Operation .........................................................................9 Applications ....................................................................................... 1 Applications Information .............................................................. 10 Functional Block Diagram ..............................................................
PAGE 3
ADP3333 SPECIFICATIONS VIN = 6.0 V, CIN = COUT = 1.0 µF, TJ = −40°C to +125°C, unless otherwise noted. Table 1. Parameter 1 OUTPUT Voltage Accuracy2 Line Regulation2 Load Regulation Dropout Voltage Peak Load Current Output Noise GROUND CURRENT In Regulation 2 Condition Min VOUT VIN = VOUTNOM + 0.3 V to 12 V, IL = 0.1 mA to 300 mA, TJ = 25°C VIN = VOUTNOM + 0.3 V to 12 V, IL = 0.1 mA to 300 mA VIN = VOUTNOM + 0.3 V to 12 V, TJ = 25°C IL = 0.
PAGE 4
ADP3333 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Input Supply Voltage Shutdown Input Voltage Power Dissipation Operating Ambient Temperature Range Operating Junction Temperature Range Soldering Conditions Rating −0.3 V to +16 V −0.3 V to +16 V Internally Limited −40°C to +85°C −40°C to +125°C JEDEC J-STD-020 Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device.
PAGE 5
ADP3333 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS OUT 1 IN 2 GND 3 ADP3333 TOP VIEW (Not to Scale) NC1 4 8 NC 7 SD 6 NC 5 NC BE CONNECTED TO ANY OTHER PIN. 02615-003 NC = NO CONNECT 1CAN Figure 3. Pin Configuration Table 4. Pin Function Descriptions Pin No. 1 2 3 4 to 6, 8 7 Mnemonic OUT IN GND NC SD Description Output of the Regulator. Bypass to ground with a 1.0 μF or larger capacitor. Input Pin. Bypass to ground with a 1.0 μF or larger capacitor. Ground Pin. No Connect.
PAGE 6
ADP3333 TYPICAL PERFORMANCE CHARACTERISTICS 2.502 2.5 VOUT = 2.5V 0mA VIN = 6V 2.500 GROUND CURRENT (mA) 100mA 2.496 2.494 200mA 2.492 300mA 02615-004 2.488 4 5 1.0 0.5 2.490 3 1.5 6 7 8 9 10 11 02615-007 OUTPUT VOLTAGE (V) 2.0 2.498 0 12 0 50 100 INPUT VOLTAGE (V) 150 200 Figure 4. Line Regulation Output Voltage vs. Input Voltage 300 Figure 7. Ground Current vs. Output Current 2.502 1.0 VIN = 6V VOUT = 2.5V 0.9 2.500 0mA 0.8 0.7 2.
PAGE 7
ADP3333 0.16 VOUT = 2.5V RL = 8.3Ω CL = 1µF VOUT (V) 2.52 0.12 0.10 0.08 2.51 2.50 2.49 0.06 0 02615-010 0.02 0 50 100 150 200 250 3.50 3.00 300 02615-013 0.04 VIN (V) INPUT/OUTPUT VOLTAGE (mV) 0.14 40 80 140 OUTPUT CURRENT (mA) Figure 10. Dropout Voltage vs. Output Current VOUT (V) 2.5 2.0 VOUT = 2.5V RL = 8.3Ω CL = 10µF 2.52 VIN 2.51 2.50 2.49 1.5 1.0 VOUT 02615-011 0 1 2 3 3.50 3.00 02615-014 0.5 VIN (V) INPUT/OUTPUT VOLTAGE (V) Figure 13.
PAGE 8
ADP3333 –20 VOUT = 2.2V –30 2.6 2.5 IOUT (mA) 2.4 300 CL = 10µF IL = 500mA CL = 1µF IL = 500mA –40 CL = 1µF IL = 50µA –50 –60 –70 CL = 10µF IL = 50µA –80 02615-016 10 200 400 600 –90 10 800 100 1k 10k 100k 1M 02615-019 RIPPLE REJECTION (dB) VOUT (V) 2.7 VIN = 4V VOUT = 2.5V CL = 10µF 10M FREQUENCY (Hz) TIME (µs) Figure 19. Power Supply Ripple Rejection Figure 16. Load Transient Response, CL = 10 µF 120 2.
PAGE 9
ADP3333 THEORY OF OPERATION temperature stable output. This unique arrangement specifically corrects for the loading of the divider so that the error resulting from base current loading in conventional circuits is avoided. The ADP3333 anyCAP LDO uses a single control loop for regulation and reference functions (see Figure 22). The output voltage is sensed by a resistive voltage divider consisting of R1 and R2 that is varied to provide the available output voltage option.
PAGE 10
ADP3333 APPLICATIONS INFORMATION CAPACITOR SELECTION CALCULATING JUNCTION TEMPERATURE Output Capacitor Device power dissipation is calculated as follows: The stability and transient response of the LDO is a function of the output capacitor. The ADP3333 is stable with a wide range of capacitor values, types, and ESR (anyCAP). A capacitor as low as 1.0 μF is all that is needed for stability. Larger capacitors can be used if high current surges on the output are anticipated.
PAGE 11
ADP3333 OUTLINE DIMENSIONS 3.20 3.00 2.80 8 3.20 3.00 2.80 5 1 5.15 4.90 4.65 4 PIN 1 0.65 BSC 0.95 0.85 0.75 1.10 MAX 0.15 0.00 0.38 0.22 COPLANARITY 0.10 0.23 0.08 8° 0° 0.80 0.60 0.40 SEATING PLANE COMPLIANT TO JEDEC STANDARDS MO-187-AA Figure 23. 8-Lead Mini Small Outline Package [MSOP] (RM-8) Dimensions shown in millimeters ORDERING GUIDE Model ADP3333ARM-1.5-RL ADP3333ARM-1.5-RL7 ADP3333ARM-1.8-RL ADP3333ARM-1.8-RL7 ADP3333ARM-2.5-RL ADP3333ARM-2.5-RL7 ADP3333ARM-2.77-RL ADP3333ARM-2.