CAT6217_11 [ONSEMI]
150 mA CMOS LDO Regulator; 150毫安CMOS LDO稳压器型号: | CAT6217_11 |
厂家: | ONSEMI |
描述: | 150 mA CMOS LDO Regulator |
文件: | 总9页 (文件大小:156K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
CAT6217
150 mA CMOS LDO
Regulator
Description
The CAT6217 is a 150 mA CMOS low dropout regulator that
provides fast response time during load current and line voltage
changes.
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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 150 ms.
5
1
With zero shutdown current and low ground current of 55 mA
typical, the CAT6217 is ideal for battery−operated devices with supply
voltages from 2.3 V to 5.5 V. An internal under voltage lockout circuit
disables the output at supply voltages under 2.1 V typical.
The CAT6217 offers 1% initial accuracy and low dropout voltage,
90 mV typical at 150 mA. Stable operation is provided with a 1 mF
ceramic capacitor, reducing required board space and component cost.
Other features include output short−circuit current limit and thermal
protection.
TSOT−23
TD SUFFIX
CASE 419AE
PIN CONNECTIONS
1
VOUT
VIN
GND
EN
The device is available in the low profile (1 mm max height) 5−lead
TSOT−23 package.
BYP
(Top View)
Features
• Guaranteed 150 mA Output Current
MARKING DIAGRAM
• Low Dropout Voltage of 90 mV Typical at 150 mA
• Stable with 1 mF Ceramic Output Capacitor
• External 10 nF Bypass Capacitor for Low Noise
• Quick−start Feature
RTYM
• No−load Ground Current of 55 mA Typical
• Full−load Ground Current of 80 mA Typical
RT = CAT6217 Device Code
= Production Year (last digit)
M = Production Month: 1 − 9, A, B, C
Y
•
•
1.0% Initial Accuracy (V
2.0% Accuracy Over Temperature (V
• “Zero” Current Shutdown Mode
≥ 2.0 V)
OUT
≥ 2.0 V)
OUT
PIN FUNCTION
• Current Limit and Under Voltage Lockout
• Thermal Protection
Pin # Name
Function
1
2
3
VIN
Supply voltage input.
• 5−lead TSOT−23 Package
GND Ground reference.
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
EN
Enable input (active high); a 2.5 MW
pull−down resistor is provided.
Applications
4
5
BYP Optional bypass capacitor connec-
tion for noise reduction and PSRR
enhancing.
• Cellular Phones
• Battery−powered Devices
• Consumer Electronics
VOUT LDO Output Voltage.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 9 of this data sheet.
© Semiconductor Components Industries, LLC, 2011
1
Publication Order Number:
January, 2011 − Rev. 6
CAT6217/D
CAT6217
VIN
VOUT
V
V
IN
LDO
EN
V
VIN VOUT
V
IN
OUT
OUT
C
IN
2.3 V
C
OUT
1 μF
to 5.5 V
1 μF
CAT6217
Shutdown
Reference
BYP
OFF
EN
BYP
GND
Switch
ON
C
10 nF
(Optional)
BYP
GND
Figure 1. Typical Application Circuit
Figure 2. CAT6217 Functional Block Diagram
Pin Function
VIN is the supply pin for the LDO. A small 1 mF ceramic
The capacitor should be located near the device. ESR
domain is 5 mW to 500 mW. V can deliver a maximum
bypass capacitor is required between the V pin and ground
IN
OUT
near the device. When using longer connections to the power
guaranteed current of 150 mA. A 250 W internal shutdown
switch discharges the output capacitor in the no−load
condition.
supply, C value can be increased without limit. The
IN
operating input voltage range is from 2.3 V to 5.5 V.
EN is the enable control logic (active high) for the regulator
output. It has a 2.5 MW pull−down resistor, which assures
that if EN pin is left open, the circuit is disabled.
GND is the ground reference for the LDO. The pin must be
connected to the ground plane on the PCB.
BYP is the reference bypass pin. An optional 0.01 mF
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 1 mF ceramic
bypass capacitor is required between the V
pin and
OUT
ground for stability. For better transient response, its value
can be increased to 4.7 mF.
Table 1. ABSOLUTE MAXIMUM RATINGS
Parameter
Rating
Unit
V
V
IN
0 to 6.5
V
EN
, V
OUT
−0.3 to V + 0.3
V
IN
Junction Temperature, T
+150
_C
mW
_C
_C
kV
J
Power Dissipation, P
Internally Limited (Note 1)
D
Storage Temperature Range, T
−65 to +150
S
Lead Temperature (soldering, 5 sec.)
ESD Rating (Human Body Model)
260
3
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
Table 2. RECOMMENDED OPERATING CONDITIONS (Note 2)
Parameter
Range
Unit
V
V
V
2.3 to 5.5
IN
0 to V
V
EN
IN
Junction Temperature Range, T
−40 to +125
_C
J
Package Thermal Resistance (SOT23−5), θ
235
_C/W
JA
NOTE: Typical application circuit with external components is shown above.
1. The maximum allowable power dissipation at any T (ambient temperature) is P
= (T
− T )/q . Exceeding the maximum allowable
A JA
A
Dmax
Jmax
power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.
2. The device is not guaranteed to work outside its operating rating.
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2
CAT6217
Table 3. ELECTRICAL OPERATING CHARACTERISTICS (Note 3)
(V = V
+ 1.0 V, V = High, I
= 100 mA, C = C
= 1 mF, ambient temperature of 25°C (over recommended operating
IN
OUT
EN
OUT
IN
OUT
conditions unless specified otherwise). Bold numbers apply for the entire junction temperature range.)
Symbol
Parameter
Conditions
Min
−1.0
−2.0
Typ
Max
+1.0
+2.0
Unit
V
Output Voltage Accuracy
Initial accuracy for V ≥ 2.0 V
OUT
%
OUT−ACC
(Note 6)
TC
Output Voltage Temp. Coefficient
Line Regulation
40
ppm/°C
OUT
V
V
= V + 1.0 V to 5.5 V
OUT
−0.2
−0.4
0.1
+0.2
+0.4
1.0
%/V
R−LINE
IN
V
Load Regulation
I
I
I
I
= 100 mA to 150 mA
= 150 mA
0.6
90
55
80
%
mV
mA
R−LOAD
OUT
OUT
OUT
OUT
1.3
V
DROP
Dropout Voltage (Note 4)
Ground Current
125
150
75
I
= 0 mA
GND
90
= 150 mA
< 0.4 V
I
Shutdown Ground Current
V
EN
1
mA
GND−SD
2
PSRR
Power Supply Rejection Ratio
f = 1 kHz, C
= 10 nF
64
54
dB
BYP
f = 20 kHz, C
= 10 nF
BYP
I
Output short circuit current limit
Turn−On Time
V
= 0 V
350
150
45
mA
ms
SC
OUT
T
C
= 10 nF
BYP
ON
e
Output Noise Voltage (Note 5)
Shutdown Switch Resistance
Enable pull−down resistor
BW = 10 Hz to 100 kHz
mVrms
W
N
R
250
2.5
2.1
OUT−SH
R
MW
V
EN
V
Under−voltage lock out (UVLO)
threshold
UVLO
ESR
C
equivalent series resistance
5
500
mW
OUT
ENABLE INPUT
V
HI
Logic High Level
V
V
= 2.3 to 5.5 V
1.8
V
IN
= 2.3 to 5.5 V, 0°C to +125°C
junction temperature
1.6
IN
V
Logic Low Level
V
V
V
= 2.3 to 5.5 V
= 0.4 V
0.4
1
V
LO
IN
I
Enable Input Current
0.15
1.5
mA
EN
EN
EN
= V
4
IN
THERMAL PROTECTION
T
Thermal Shutdown
Thermal Hysteresis
160
10
°C
°C
SD
T
HYS
3. Specification for 2.80 V output version unless specified otherwise.
4. Dropout voltage is defined as the input−to−output differential at which the output voltage drops 2% below its nominal value. During test, the
input voltage stays always above the minimum 2.3 V.
5. Specification for 1.8 V output version.
6. For V
< 2.0 V, the initial accuracy is 2% and across temperature 3%.
OUT
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3
CAT6217
TYPICAL CHARACTERISTICS (shown for 2.80 V output option)
(V = 3.85 V, I
IN
= 100 mA, C = C
= 1 mF, C
= 10 nF, T = 25°C unless otherwise specified.)
OUT
IN
OUT
BYP
A
2.87
2.86
2.85
2.84
2.83
2.82
3.0
2.5
2.0
1.5
1.0
0.5
0.0
100 mA
150 mA
2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE [V]
0.0 1.0 2.0 3.0 4.0 5.0 6.0
INPUT VOLTAGE [V]
Figure 3. Dropout Characteristics
Figure 4. Line Regulation
2.87
2.95
2.90
2.85
2.80
2.75
2.86
2.85
2.84
2.83
2.82
−40 −10 20
50
80 110 140
0
25
50
75 100 125 150
TEMPERATURE [°C]
OUTPUT LOAD CURRENT [mA]
Figure 5. Load Regulation
Figure 6. Output Voltage vs. Temperature
65
100
90
80
70
60
50
60
55
50
45
−40 −10 20
50
80
110 140
0
25
50
75 100 125 150
TEMPERATURE [°C]
OUTPUT LOAD CURRENT [mA]
Figure 7. Ground Current vs. Load Current
Figure 8. Ground Current vs. Temperature
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4
CAT6217
TYPICAL CHARACTERISTICS (shown for 2.80 V output option)
(V = 3.85 V, I
IN
= 100 mA, C = C
= 1 mF, C
= 10 nF, T = 25°C unless otherwise specified.)
OUT
IN
OUT
BYP
A
600
500
400
300
200
100
0
70
60
50
40
30
20
10
0
VOUT = 0V
0.0
1.0 2.0
3.0 4.0
5.0 6.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
INPUT VOLTAGE [V]
INPUT VOLTAGE [V]
Figure 9. Output Short−circuit Current Limit
Figure 10. Ground Current vs. Input Voltage
200
120
150
100
50
90
60
30
0
0
0
30
60
90
120
150
−40 −10 20
50
80
110 140
TEMPERATURE [°C]
OUTPUT LOAD CURRENT [mA]
Figure 11. Dropout vs. Temperature
(150 mA Load)
Figure 12. Dropout vs. Load Current
80
70
60
50
40
30
20
10
0
1.6
1.2
0.8
0.4
0.0
C
= 10 nF
BYP
C
= 0
BYP
0.01
0.1
1
10
100
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE [V]
FREQUENCY [kHz]
Figure 13. Enable Threshold vs. Input Voltage
Figure 14. PSRR vs. Frequency (10 mA Load)
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5
CAT6217
TYPICAL CHARACTERISTICS (shown for 2.80 V output option)
(V = 3.85 V, I
IN
= 100 mA, C = C
= 1 mF, C
= 10 nF, T = 25°C unless otherwise specified.)
OUT
IN
OUT
BYP
A
70
60
50
40
30
20
10
0
70
1 kHz
1 kHz
60
50
10 kHz
10 kHz
40
100 kHz
30
20
10
0
100 kHz
0
100
200
300
400
500
0
100
200
300
400
500
VIN − VOUT [mV]
VIN − VOUT [mV]
Figure 15. PSRR (30 mA Load)
Figure 16. PSRR (150 mA Load)
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6
CAT6217
TRANSIENT CHARACTERISTICS (shown for 2.80 V output option)
(V = 3.85 V, I
= 100 mA, C = C
= 1 mF, C
= 10 nF, T = 25°C unless otherwise specified.)
IN
OUT
IN
OUT
BYP
A
Figure 17. Enable Turn−on (100 mA Load)
Figure 18. Enable Turn−off (100 mA Load)
Figure 19. Enable Turn−on (150 mA Load)
Figure 20. Enable Turn−off (150 mA Load)
Figure 21. Line Transient Response
(3.85 V to 4.85 V)
Figure 22. Load Transient Response
(0.1 mA to 150 mA)
Note: All transient characteristics are generated using the evaluation board CAT621XEVAL1.
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7
CAT6217
PACKAGE DIMENSIONS
TSOT−23, 5 LEAD
CASE 419AE−01
ISSUE O
SYMBOL
MIN
NOM
MAX
1.00
0.10
0.90
0.45
0.20
D
A
A1
A2
b
e
0.01
0.80
0.30
0.12
0.05
0.87
c
0.15
D
2.90 BSC
2.80 BSC
1.60 BSC
0.95 TYP
0.40
E1
E
E
E1
e
L
0.30
0.50
L1
L2
θ
0.60 REF
0.25 BSC
0º
8º
TOP VIEW
A2 A
q
L
b
c
A1
L2
L1
SIDE VIEW
END VIEW
Notes:
(1) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC MO-193.
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8
CAT6217
Example of Ordering Information (Note 9)
Prefix
Device #
Suffix
CAT
6217
−280
TD
G
T3
Company ID
(Optional)
Product Number
V
OUT
Voltage (Note 10)
150: 1.50 V
180: 1.80 V
250: 2.50 V
280: 2.80 V
285: 2.85 V
330: 3.30 V
Package
TD: TSOT−23
Lead Finish
G: NiPdAu
Tape & Reel (Note 11)
T: Tape & Reel
6217
3: 3,000 / Reel
ORDERING INFORMATION
Orderable Part Number
CAT6217−150TDGT3
V
OUT
Voltage
Package
TSOT−23
TSOT−23
TSOT−23
TSOT−23
TSOT−23
TSOT−23
Shipping
1.50 V
3,000 / Tape & Reel
3,000 / Tape & Reel
3,000 / Tape & Reel
3,000 / Tape & Reel
3,000 / Tape & Reel
3,000 / Tape & Reel
CAT6217−180TDGT3
1.80 V
2.50 V
2.80 V
2.85 V
3.30 V
CAT6217−250TDGT3
CAT6217−280TDGT3
CAT6217−285TDGT3 (Note 10)
CAT6217−330TDGT3
7. All packages are RoHS−compliant (Lead−free, Halogen−free).
8. The standard finish is NiPdAu.
9. The device used in the above example is a CAT6217−280TDGT3 (V
= 2.80 V, in a TSOT−23 package, NiPdAu, Tape & Reel, 3,000/Reel).
OUT
10.For other voltage options, please contact your nearest ON Semiconductor Sales office.
11. For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
ON Semiconductor and
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
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CAT6217/D
相关型号:
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