CATALYST CAT6217-180TD-GT3

CAT6217
150mA CMOS LDO Regulator
FEATURES
DESCRIPTION
„ Guaranteed 150mA output current
The CAT6217 is a 150mA CMOS low dropout
regulator that provides fast response time during load
current and line voltage changes.
„ Low dropout voltage of 90mV typical at 150mA
„ Stable with 1μF ceramic output capacitor
The quick-start feature allows the use of an external
bypass capacitor to reduce the overall output noise
without affecting the turn-on time of just 150μs.
„ External 10nF bypass capacitor for low noise
„ Quick-start feature
With zero shutdown current and low ground current of
55μA typical, the CAT6217 is ideal for batteryoperated devices with supply voltages from 2.3V to
5.5V. An internal under voltage lockout circuit disables
the output at supply voltages under 2.1V typical.
„ No-load ground current of 55μA typical
„ Full-load ground current of 80μA typical
„ ±1.0% initial accuracy (VOUT ≥ 2.0V)
„ ±2.0% accuracy over temperature (VOUT ≥ 2.0V)
The CAT6217 offers 1% initial accuracy and low
dropout voltage, 90mV typical at 150mA. Stable
operation is provided with a 1μF ceramic capacitor,
reducing required board space and component cost.
„ “Zero” current shutdown mode
„ Current limit and Under voltage lockout
„ Thermal protection
„ 5-lead TSOT-23 package
Other features include output short-circuit current limit
and thermal protection.
APPLICATIONS
The device is available in the low profile (1mm max
height) 5-lead TSOT-23 package.
„ Cellular phones
„ Battery-powered devices
„ Consumer Electronics
For Ordering Information details, see page 9.
PIN CONFIGURATION
TYPICAL APPLICATION CIRCUIT
TSOT-23 5-Lead
(1mm height)
VIN
2.3V
to 5.5V
5 VOUT
VIN 1
GND 2
4 BYP
EN 3
OFF ON
Top View
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
CIN
1µF
VIN
VOUT
CAT6217
EN
BYP
GND
VOUT
COUT
1µF
CBYP (Optional)
10nF
Doc. No. MD-10011 Rev. D
CAT6217
PIN DESCRIPTIONS
BLOCK DIAGRAM
Pin # Name Function
1
VIN Supply voltage input.
2
GND Ground reference.
Enable input (active high); a 2.5MΩ
3
EN
pull-down resistor is provided.
Optional bypass capacitor connection
4
BYP for noise reduction and PSRR
enhancing.
5 VOUT LDO Output Voltage.
VIN
VIN
VOUT
LDO
EN
BYP
Reference
VOUT
Shutdown
Switch
GND
Figure 2. CAT6217 Functional Block Diagram
PIN FUNCTION
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.
The capacitor should be located near the device. ESR
domain is 5mΩ to 500mΩ. VOUT can deliver a
maximum guaranteed current of 150mA. 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.
EN is the enable control logic (active high) for the regulator
output. It has a 2.5MΩ pull-down resistor, which
assures that if EN pin is left open, the circuit is disabled.
BYP is the reference bypass pin. An optional 0.01μF
capacitor can be connected between BYP pin and
GND to reduce the output noise and enhance the
PSRR at high frequency.
VOUT is the LDO regulator output. A small 1μF
ceramic bypass capacitor is required between the VOUT
pin and ground for stability. For better transient
response, its value can be increased to 4.7μF.
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
VIN
VEN
Junction Temperature Range, TJ
Package Thermal Resistance (SOT23-5), θJA
Range
2.3 to 5.5
0 to VIN
-40 to +125
235
Unit
V
V
°C
°C/W
Typical application circuit with external components is shown on page 1.
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-10011 Rev. D
2
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT6217
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
VOUT-ACC Output Voltage Accuracy
Initial accuracy for VOUT ≥ 2.0V (4)
TCOUT
Output Voltage Temp. Coefficient
VR-LINE
Line Regulation
VIN = VOUT + 1.0V to 5.5V
VR-LOAD
Load Regulation
IOUT = 100μA to 150 mA
VDROP
Dropout Voltage (2)
IOUT = 150mA
IGND
Min
+1.0
-2.0
+2.0
40
-0.2
Shutdown Ground Current
PSRR
Power Supply Rejection Ratio
ISC
TON
eN
VUVLO
ESR
+0.2
1.0
1.3
90
125
150
55
Unit
%
ppm/ºC
+0.4
0.6
%/V
%
mV
75
90
μA
80
1
VEN < 0.4V
2
μA
f = 1kHz, CBYP = 10nF
64
f = 20kHz, CBYP = 10nF
54
Output short circuit current limit
VOUT = 0V
350
mA
Turn-On Time
CBYP = 10nF
150
μs
BW = 10Hz to 100kHz
45
μVrms
250
Ω
2.5
MΩ
2.1
V
Output Noise Voltage
(3)
ROUT-SH Shutdown Switch Resistance
REN
±0.1
-0.4
IOUT = 150mA
IGND-SD
Max
-1.0
IOUT = 0μA
Ground Current
Typ
Enable pull-down resistor
Under-voltage lock out (UVLO)
threshold
COUT equivalent series resistance
5
dB
500
mΩ
Enable Input
VHI
Logic High Level
VLO
Logic Low Level
IEN
Enable Input Current
VIN = 2.3 to 5.5V
VIN = 2.3 to 5.5V, 0ºC to
+125ºC junction temperature
VIN = 2.3 to 5.5V
1.8
V
1.6
0.4
VEN = 0.4V
0.15
1
VEN = VIN
1.5
4
V
μA
Thermal Protection
TSD
Thermal Shutdown
160
ºC
THYS
Thermal Hysteresis
10
ºC
Notes:
(1 Specification for 2.85V 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.
(4) For VOUT < 2.0V, the initial accuracy is ±2% and across temperature ±3%.
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
3
Doc. No. MD-10011 Rev. D
CAT6217
TYPICAL CHARACTERISTICS (shown for 2.85V output version)
VIN = 3.85V, IOUT = 100μA, CIN = COUT = 1μF, CBYP = 10nF, TA = 25°C unless otherwise specified.
Line Regulation
Dropout Characteristics
2.87
100μA
2.5
OUTPUT VOLTAGE [V]
OUTPUT VOLTAGE [V]
3.0
150mA
2.0
1.5
1.0
0.5
0.0
2.85
2.84
2.83
2.82
0.0
1.0 2.0 3.0 4.0 5.0
INPUT VOLTAGE [V]
6.0
2.5
5.5
2.87
OUTPUT VOLTAGE [V]
2.95
2.90
2.85
2.80
2.75
2.86
2.85
2.84
2.83
2.82
0
25 50 75 100 125 150
OUTPUT LOAD CURRENT [mA]
-40
Ground Current vs. Load Current
-10 20 50 80 110 140
TEMPERATURE [°C]
Ground Current vs. Temperature
65
GROUND CURRENT [μA]
100
GROUND CURRENT [μA]
3.0 3.5 4.0 4.5 5.0
INPUT VOLTAGE [V]
Output Voltage vs. Temperature
Load Regulation
OUTPUT VOLTAGE [V]
2.86
90
80
70
60
50
60
55
50
45
0
25 50 75 100 125 150
OUTPUT LOAD CURRENT [mA]
Doc. No. MD-10011 Rev. D
-40
4
-10
20
50
80 110 140
TEMPERATURE [°C]
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT6217
TYPICAL CHARACTERISTICS (shown for 2.85V output option)
VIN = 3.85V, IOUT = 100μA, CIN = COUT = 1μF, CBYP = 10nF, TA = 25°C unless otherwise specified.
Ground Current vs. Input Voltage
600
70
500
60
GROUND CURRENT [μA]
CURRENT LIMIT [mA] .
Output Short-Circuit Current Limit
400
300
200
100
VOUT = 0V
1.0 2.0 3.0 4.0 5.0
INPUT VOLTAGE [V]
40
30
20
10
0
0
0.0
50
0.0
6.0
Dropout vs. Temperature (150mA Load)
6.0
120
DROPOUT VOLTAGE [mV]
DROPOUT VOLTAGE [mV]
2.0 3.0 4.0 5.0
INPUT VOLTAGE [V]
Dropout vs. Load Current
200
150
100
50
90
60
30
0
0
-40
0
-10 20 50 80 110 140
TEMPERATURE [°C]
30
60
90
120 150
OUTPUT LOAD CURRENT [mA]
PSRR vs. Frequency (10mA Load)
Enable Threshold vs. Input Voltage
80
1.6
CBY P = 10nF
70
1.2
60
PSRR [dB]
ENABLE THRESHOLD [V]
1.0
0.8
0.4
50
40
CBY P = 0
30
20
10
0.0
0
0.01
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE [V]
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
5
0.1
1
10
FREQUENCY [kHz]
100
Doc. No. MD-10011 Rev. D
CAT6217
TYPICAL CHARACTERISTICS (shown for 2.85V output option)
VIN = 3.85V, IOUT = 100μA, CIN = COUT = 1μF, CBYP = 10nF, TA = 25°C unless otherwise specified.
PSRR (150mA Load)
PSRR (30mA Load)
70
70
1kHz
60
10kHz
10kHz
50
PSRR [dB]
50
PSRR [dB]
1kHz
60
40
30
100kHz
40
20
20
10
10
0
0
0
Doc. No. MD-10011 Rev. D
100
200
300
400
VIN - VOUT [mV]
100kHz
30
0
500
6
100
200
300
400
VIN - VOUT [mV]
500
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT6217
TRANSIENT CHARACTERISTICS (shown for 2.85V output option)
VIN = 3.85V, IOUT = 100μA, CIN = COUT = 1μF, CBYP = 10nF, TA = 25°C unless otherwise specified.
Note: All transient characteristics are generated using the evaluation board CAT621XEVAL1.
Enable Turn-On (100μA Load)
Enable Turn-Off (100μA Load)
Enable Turn-On (150mA Load)
Enable Turn-Off (150mA Load)
Load Transient Response (0.1mA to 150mA)
Line Transient Response (3.85V to 4.85V)
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
7
Doc. No. MD-10011 Rev. D
CAT6217
PACKAGE OUTLINE DRAWING
TSOT-23 5-Lead (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
0.15
0.20
D
E1
E
MAX
0.45
2.90 BSC
E
2.80 BSC
E1
1.60 BSC
e
0.95 TYP
L
0.30
0.40
L1
0.60 REF
L2
0.25 BSC
θ
0º
0.50
8º
TOP VIEW
A2 A
b
θ
L
A1
c
L2
L1
SIDE VIEW
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-229.
Doc. No. MD-10011 Rev. D
8
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT6217
EXAMPLE OF ORDERING INFORMATION
(1)(2)(3)(5)
Prefix
Device #
CAT
6217
-280
TD
-G
Package
TD: TSOT-23
Lead Finish
G: NiPdAu
Product Number
6217
VOUT Voltage (4)
150: 1.50V
180: 1.80V
250: 2.50V
280: 2.80V
285: 2.85V
330: 3.30V
Company ID
Suffix
T3
Tape & Reel
T: Tape & Reel
3: 3,000/Reel
Ordering Number
VOUT Voltage
Package
Quantity per Reel
CAT6217-150TD-GT3
CAT6217-180TD-GT3
CAT6217-250TD-GT3
CAT6217-280TD-GT3
CAT6217-285TD-GT3 (4)
CAT6217-330TD-GT3 (4)
1.50V
1.80V
2.50V
2.80V
2.85V
3.30V
TSOT-23
TSOT-23
TSOT-23
TSOT-23
TSOT-23
TSOT-23
3,000
3,000
3,000
3,000
3,000
3,000
For Product Top Mark Codes, click here:
http://www.catsemi.com/techsupport/producttopmark.asp
Notes:
(1) All packages are RoHS-compliant (Lead-free, Halogen-free).
(2) The standard finish is NiPdAu.
(3) The device used in the above example is a CAT6217-280TD-GT3 (VOUT = 2.80V, in a TSOT-23 package, NiPdAu, Tape and Reel, 3,000/Reel).
(4) Standard voltages are 1.50V, 1.80V, 2.50V, 2.80V. For other voltage options, please contact your nearest Catalyst Semiconductor
Sales office.
(5) Top marking for CAT6217 is RT.
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
9
Doc. No. MD-10011 Rev. D
REVISION HISTORY
Date
21-Jun-07
Rev.
Reason
A
Preliminary Revision
07-Nov-07
B
Update Package Outline Drawing
Update Example of Ordering Information
Change Document Number from MD-4011 to
MD-10011
08-Feb-08
C
Update Electrical Operating Characteristics
22-May-08
D
Add link to Top Mark Codes
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Document No: MD-10011
Revision:
D
Issue date:
05/22/08