Catalyst CAT6221-PGTD-G 300ma cmos dual ldo regulator Datasheet

CAT6221
300mA CMOS Dual LDO Regulator
FEATURES
DESCRIPTION
„ Two outputs with guaranteed 300mA peak
output current
The 300mA CMOS Dual LDO CAT6221 combines in a
single TSOT-23 6-lead package two low dropout
regulators (LDO), each with its own enable pin.
„ Low dropout voltages of 210mV typical at
300mA
The regulator outputs drive loads up to 300mA. By
design, the dual LDO provides fast response time
during load current and line voltage changes.
„ Stable with ceramic output capacitors
„ Independent enable pins
„ Under voltage lockout
Each LDO is optimized for low noise and high
crosstalk isolation. With zero shut down current and a
low quiescent current of 100μA, the dual LDO is ideal
for battery-operated devices with supply voltage from
2.3V to 5.5V.
„ No-load ground current of 100μA typical
„ Full-load ground current of 160μA typical
„ ±1.0% output voltage initial accuracy
„ ±2.0% accuracy over temperature
The dual LDO offers 1% initial accuracy and very low
dropout voltage, typical 210mV at 300mA. Stable
operation is provided with small 1μF ceramic output
capacitors, reducing required board space and
component cost.
„ “Zero” current shutdown mode
„ Fold-back current limit and thermal protection
„ TSOT-23 6-lead, 0.8mm height package
APPLICATIONS
Other features include fold-back current limit and
thermal protection.
„ Cellular phones
The dual LDO is available in the tiny 6-lead TSOT-23
package with a maximum height of 0.8mm.
„ Battery-powered devices
„ Consumer Electronics
For Ordering Information details, see page 10.
PIN CONFIGURATION
TYPICAL APPLICATION CIRCUIT
6-Lead TSOT-23
(0.8mm height)
VIN
VIN
EN1
1
VIN
2
EN2
3
6
VOUT1
5
GND
4
VOUT2
2.3V to 5.5V
1µF
CAT4201
OFF ON
OFF ON
COUT1
CAT6221
EN1
VOUT2
EN2 GND
VOUT1
1µF
VOUT2
COUT2
1µF
Top View
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
VOUT1
CIN
1
Doc. No. MD-10001 Rev. A
CAT6221
PIN DESCRIPTIONS
BLOCK DIAGRAM
Pin # Name Function
1
EN1 Enable input (active high) for VOUT1.
2
VIN
Supply voltage input.
3
EN2 Enable input (active high) for VOUT2.
4 VOUT2 LDO Output Voltage 2.
5
GND Ground reference.
6 VOUT1 LDO Output Voltage 1.
VIN
VIN
VOUT1
LDO1
EN1
VOUT1
EN1
Reference
Shutdown
Switch
VOUT2
PIN FUNCTION
LDO2
EN2
VIN is the supply pin for the LDO. A small 1μF
ceramic bypass capacitor is required between the VIN
pin and ground near the device. When using longer
connections to the power supply, CIN value can be
increased without limit. The operating input voltage
range is from 2.3V to 5.5V.
VOUT2
EN2
Shutdown
Switch
GND
EN1 & 2 are the enable control logic (active high) for the
regulator outputs.
Figure 2. CAT6221 Functional Block Diagram
VOUT1 & 2 are the LDO regulator outputs. A small 1μF
ceramic bypass capacitor is required between the
VOUT pins and ground. For better transient response,
its value can be increased to 4.7μF.
On each output, a 250Ω internal shutdown switch
discharges the output capacitor in the no-load
condition.
GND is the ground reference for the LDO. The pin
must be connected to the ground plane on the PCB.
The capacitor should be located near the device. For
the TSOT23 6-lead package, a continuous 300mA
output current for both LDOs may turn-on the thermal
protection.
ABSOLUTE MAXIMUM RATINGS (1)
Parameter
VIN
VEN, VOUT
Junction Temperature, TJ
Power Dissipation, PD
Storage Temperature Range, TS
Lead Temperature (soldering, 5 sec.)
ESD Rating (Human Body Model)
Rating
0 to 6.5
-0.3 to VIN+0.3
+150
Internally Limited (2)
-65 to +150
260
3
Unit
V
V
°C
mW
°C
°C
kV
RECOMMENDED OPERATING CONDITIONS (3)
Parameter
Range
VIN
2.3 to 5.5
VEN
0 to VIN
Junction Temperature Range, TJ
-40 to +125
235
Package Thermal Resistance (TSOT23), θJA
Typical application circuit with external components are shown on page 1.
Unit
V
V
°C
°C/W
Notes:
(1) Exceeding maximum rating may damage the device.
(2) The maximum allowable power dissipation at any TA (ambient temperature) is PDmax = (TJmax – TA) / θJA. Exceeding the maximum
allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.
(3) The device is not guaranteed to work outside its operating rating.
Doc. No. MD-10001 Rev. A
2
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT6221
ELECTRICAL OPERATING CHARACTERISTICS (1)
VIN = VOUT + 1.0V, VEN = High, IOUT = 100µA, CIN = COUT = 1µF, ambient temperature of 25ºC (over recommended
operating conditions unless specified otherwise). Bold numbers apply for the entire junction temperature range.
Symbol Parameter
Conditions
Min
VOUT-ACC
Initial accuracy
-1.0
-2.0
-0.2
-0.4
TCOUT
Output Voltage Accuracy
Output Voltage Temp. Coefficient
VR-LINE
Line Regulation
VIN = VOUT + 1.0V to 5.5V
VR-LOAD
Load Regulation
IOUT = 100μA to 300 mA
VDROP
Dropout Voltage (2)
IOUT = 300mA
210
100
55
PSRR
Power Supply Rejection Ratio
ISC
Output short circuit current limit
TON
Turn-On Time
eN
Output Noise Voltage
(3)
ROUT-SH
Shutdown Switch Resistance
VIN-UVLO
Under voltage lockout threshold
ESR
COUT equivalent series resistance
+1.0
+2.0
%
ppm/ºC
+0.2
+0.4
1.5
2
280
350
140
%/V
%
mV
75
µA
90
One LDO Enabled
IOUT = 300mA
Shutdown Ground Current
Unit
160
One LDO Enabled
IOUT = 0μA
IGND-SD
Max
170
Both LDOs Enabled
IOUT = 300mA
Ground Current
40
±0.1
0.9
Both LDOs Enabled
IOUT = 0μA
IGND
Typ
85
2
VEN < 0.4V
4
µA
f = 1kHz
60
f = 20kHz
45
VOUT = 0V
130
mA
150
µs
95
µVrms
250
Ω
BW = 10Hz to 100kHz
dB
2.15
5
V
500
mΩ
0.4
V
V
Enable Input (EN1, EN2)
VHI
VLO
Logic High Level
Logic Low Level
IEN
Enable Input Current
VIN = 2.3 to 5.5V
VIN = 2.3 to 5.5V
1.8
VEN = 0.4V
0.05
1
VEN = VIN
0.1
1
µA
Thermal Protection
TSD
THYS
Thermal Shutdown
Thermal Hysteresis
160
10
ºC
ºC
.
Notes:
(1) Specification for 2.8V output version unless specified otherwise.
(2) Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value measured at
1V differential. During test, the input voltage stays always above the minimum 2.3V.
(3) Specification for 1.8V output version.
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
3
Doc. No. MD-10001 Rev. A
CAT6221
TYPICAL CHARACTERISTICS (shown for 2.8V/1.8V outputs version)
VIN = 3.8V, IOUT = 100µA, EN1 = EN2 = VIN, CIN = COUT = 1µF, TA = 25°C unless otherwise specified.
Output Voltage 1 vs. Temperature
Output Voltage 2 vs. Temperature
Load Regulation VOUT1
Load Regulation VOUT2
Ground Current (EN2 = GND)
Ground Current (EN1 = GND)
Doc. No. MD-10001 Rev. A
4
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT6221
TYPICAL CHARACTERISTICS (shown for 2.8V/1.8V outputs option)
VIN = 3.8V, IOUT = 100µA, EN1 = EN2 = VIN, CIN = COUT = 1µF, TA = 25°C unless otherwise specified.
Ground Current (EN2 = GND)
Ground Current (EN1 = GND)
Output 1 Dropout Characteristics
Ground Current vs. Input Voltage
Output Voltage 1 vs. Load Current 1
Output Voltage 2 vs. Load Current 2
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
5
Doc. No. MD-10001 Rev. A
CAT6221
TYPICAL CHARACTERISTICS (shown for 2.8V/1.8V outputs option)
VIN = 3.8V, IOUT = 100µA, EN1 = EN2 = VIN, CIN = COUT = 1µF, TA = 25°C unless otherwise specified.
Line Regulation VOUT2
Line Regulation VOUT1
PSRR 1 & 2 vs. Frequency (30mA Load)
Doc. No. MD-10001 Rev. A
6
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT6221
TRANSIENT CHARACTERISTICS (shown for 2.8V/1.8V outputs option)
VIN = 3.8V, IOUT = 100µA, EN1 = EN2 = VIN, CIN = COUT = 1µF, TA = 25°C unless otherwise specified.
Note: All transient characteristics are generated using the evaluation board CAT6221EVAL1.
Enable Turn-On (100µA Loads)
Enable Turn-Off (100µA Loads)
Enable Turn-On (300mA/100μA Loads)
Enable Turn-Off (300mA/100µA Loads)
Enable Turn-On (100μA/300mA Loads)
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Enable Turn-Off (100μA/300mA Loads)
7
Doc. No. MD-10001 Rev. A
CAT6221
TRANSIENT CHARACTERISTICS (shown for 2.8V/1.8V outputs option)
VIN = 3.8V, IOUT = 100µA, EN1 = EN2 = VIN, CIN = COUT = 1µF, TA = 25°C unless otherwise specified.
Note: All transient characteristics are generated using the evaluation board CAT6221EVAL1.
VOUT2 Load Transient Response (0.1 to 300mA)
VOUT1 Load Transient Response (0.1 to 300mA)
Line Transient Response (0.1mA Loads)
Line Transient Response (0.1/100mA Loads)
Line Transient Response (100/0.1mA Loads)
Separate Enable Operation (100mA Loads)
Doc. No. MD-10001 Rev. A
8
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT6221
PACKAGE OUTLINE DRAWING
TSOT-23 6-Lead 0.8mm (TD) (1)(2)
SYMBOL
D
MIN
NOM
A
e
1.00
A1
0.01
0.05
0.10
A2
0.80
0.87
0.90
b
0.30
c
0.12
D
E1
E
MAX
0.45
0.15
0.20
2.90 BSC
E
2.80 BSC
E1
1.60 BSC
e
0.95 TYP
L
0.30
L1
0.40
0.50
0.60 REF
L2
0.25 BSC
θ
0º
8º
TOP VIEW
A2 A
b
θ
L
A1
c
L1
SIDE VIEW
L2
END VIEW
For current Tape and Reel information, download the PDF file from:
http://www.catsemi.com/documents/tapeandreel.pdf.
Notes:
(1) All dimensions are in millimeters, angles in degrees.
(2) Complies with JEDEC standard MO-193.
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
9
Doc. No. MD-10001 Rev. A
CAT6221
EXAMPLE OF ORDERING INFORMATION
(1)(2)(3)(5)
Prefix
Device #
CAT
6221
-MG
TD
-G
Package
TD: TSOT-23
Lead Finish
G: NiPdAu
Product Number
6221
VOUT Voltage (4)
See table below
for Voltage
Combinations
Company ID
Suffix
Tape & Reel
T: Tape & Reel
3: 3000 Units/Reel
VOUT Voltage
Combination(4)
Package
Quantity per Reel
CAT6221-JFTD-G
2.5V / 1.5V
TSOT-23
3000
CAT6221-JGTD-G
2.5V / 1.8V
TSOT-23
3000
CAT6221-JLTD-G
2.5V / 2.7V
TSOT-23
3000
CAT6221-JPTD-G
2.5V / 3.0V
TSOT-23
3000
CAT6221-MFTD-G
2.8V / 1.5V
TSOT-23
3000
CAT6221-MGTD-G
2.8V / 1.8V
TSOT-23
3000
CAT6221-MLTD-G
2.8V / 2.7V
TSOT-23
3000
CAT6221-MPTD-G
2.8V / 3.0V
TSOT-23
3000
CAT6221-PFTD-G
3.0V / 1.5V
TSOT-23
3000
CAT6221-PGTD-G
3.0V / 1.8V
TSOT-23
3000
CAT6221-PLTD-G
3.0V / 2.7V
TSOT-23
3000
CAT6221-PPTD-G
3.0V / 3.0V
TSOT-23
3000
CAT6221-SFTD-G
3.3V / 1.5V
TSOT-23
3000
CAT6221-SGTD-G
3.3V / 1.8V
TSOT-23
3000
CAT6221-SLTD-G
3.3V / 2.7V
TSOT-23
3000
CAT6221-SPTD-G
3.3V / 3.0V
TSOT-23
3000
Part Number
T3
Notes:
(1) All packages are RoHS-compliant (Lead-free, Halogen-free).
(2) The standard lead finish is NiPdAu pre-plated (PPF) lead frames.
(3) The device used in the above example is a CAT6221-MGTD-GT3 (VOUT1 = 2.8V, VOUT2 = 1.8V, in a TSOT-23 package, NiPdAu, Tape
and Reel).
(4) For other voltage combinations, please contact your nearest Catalyst Semiconductor Sales office.
(5) Top marking for CAT6221 is T3YM (Y = Year, M = Month).
Doc. No. MD-10001 Rev. A
10
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
REVISION HISTORY
Date
10/10/2007
Rev.
A
Reason
Initial Release
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Document No: MD-10001
Revision:
A
Issue date:
10/10/07
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