CAT6219 반도체 회로 부품 판매점
500 mA CMOS LDO Regulator
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 ON Semiconductor |
CAT6219
www.DataSheet4U.com
500 mA CMOS LDO
Regulator
Description
The CAT6219 is a 500 mA CMOS low dropout regulator that
provides fast response time during load current and line voltage
changes.
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.
With zero shutdown current and low ground current of 55 mA
typical, the CAT6219 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 2.15 V typical.
The CAT6219 offers 1% initial accuracy and low dropout voltage,
300 mV typical at 500 mA. Stable operation is provided with a small
value ceramic capacitor, reducing required board space and
component cost.
Other features include current limit and thermal protection.
The LDO is available in fixed and adjustable output in the low
profile (1 mm max height) 5−lead TSOT23 and in the 6−pad 2 mm x
2 mm TDFN packages.
Features
• Guaranteed 500 mA Peak Output Current
• Low Dropout Voltage of 300 mV Typical at 500 mA
• Stable with Ceramic Output Capacitor
• External 10 nF Bypass Capacitor for Low Noise
• Quick−start Feature
• Under Voltage Lockout
• No−load Ground Current of 55 mA Typical
• Full−load Ground Current of 85 mA Typical
• ±1.0% Initial Accuracy (VOUT ≥ 2.0 V)
• ±2.0% Accuracy Over Temperature (VOUT ≥ 2.0 V)
• “Zero” Current Shutdown Mode
• Fold−back Current Limit
• Thermal Protection
• 5−lead TSOT−23 and 6−pad TDFN Packages
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
Applications
• Cellular Phones
• Battery−powered Devices
• Consumer Electronics
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5
1
TSOT−23
TD SUFFIX
CASE 419AE
1
TDFN−6
VP5 SUFFIX
CASE 511AH
PIN CONNECTIONS
1
VIN
VOUT
GND
EN BYP/ADJ
EN
GND
VIN
1
TAB
BYP/ADJ
NC
VOUT
(Top View)
MARKING DIAGRAMS
USYM
RVYM
UMYM
US = CAT6219−125, CAT6219−250,
= CAT6219−300 Device Code
RV = CAT6219−180, CAT6219−280,
= CAT6219−285, CAT6219−330 Device Code
UM = CAT6219−ADJ Device Code
Y = Production Year (last digit)
M = Production Month: 1 − 9, A, B, C
ABYM
AB = CAT6219180, CAT6219VP5 Device Code
Y = Production Year (last digit)
M = Production Month: 1 − 9, A, B, C
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 9 of this data sheet.
© Semiconductor Components Industries, LLC, 2010
February, 2010 − Rev. 9
1
Publication Order Number:
CAT6219/D
CAT6219
www.DataSheet4U.com
2V.I3N V
to 5.5 V
CIN
1 mF
VIN VOUT
CAT6219
VOUT
COUT
2.2 mF
VIN
2.3 V
to 5.5 V
CIN
1 mF
VIN VOUT
CAT6219
COUT
2.2 mF
VOUT
R1
OFF ON
EN BYP
GND
CBYP (Optional)
10 nF
Figure 1. Typical Application Circuit
OFF ON
ǒ ǓVOUT + 1.24 V
1
)
R1
R2
EN ADJ
GND
Figure 2. Adjustable Output LDO
R2
Table 1. PIN DESCRIPTIONS
Name
Function
VIN Supply voltage input.
GND
Ground reference.
EN Enable input (active high); a 2.5 MW pull−down
resistor is provided.
BYP
Optional bypass capacitor connection for noise
reduction and PSRR enhancing.
ADJ Adjustable input. Feedback pin connected to
resistor divider.
VOUT LDO Output Voltage.
TAB To be connected to the ground plane on PCB
Pin Function
VIN is the supply pin for the LDO. A small 1 mF 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 2.3 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.
VOUT is the LDO regulator output. A small 2.2 mF ceramic
bypass capacitor is required between the VOUT pin and
ground. For better transient response, its value can be
increased to 4.7 mF.
The capacitor should be located near the device. For the
SOT23-5 package, a continuous 500 mA output current may
turn-on the thermal protection. A 250 W 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.
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.
ADJ is the adjustable input pin for the adjustable LDO. The
pin is connected to the resistor voltage divider.
Table 2. ABSOLUTE MAXIMUM RATINGS
Parameter
Rating
Unit
VIN
VEN, VOUT
Junction Temperature, TJ
Power Dissipation, PD
Storage Temperature Range, TS
Lead Temperature (soldering, 5 sec.)
0 to 6.5
−0.3 to VIN + 0.3
+150
Internally Limited (Note 1)
−65 to +150
260
V
V
_C
mW
_C
_C
ESD Rating (Human Body Model)
3 kV
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 3. RECOMMENDED OPERATING CONDITIONS (Note 2)
Parameter
Range
Unit
VIN
2.3 to 5.5
V
VEN
0 to VIN
V
Junction Temperature Range, TJ
−40 to +125
_C
Package Thermal Resistance (SOT23−5), θJA
235 _C/W
NOTE: Typical application circuit with external components is shown above.
1. The maximum allowable power dissipation at any TA (ambient temperature) is PDmax = (TJmax − TA)/qJA. Exceeding the maximum allowable
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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( onsemi )
CAT6219 regulator
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