cat6217 Catalyst Semiconductor, cat6217 Datasheet - Page 2

• Manufacturer Part Number: cat6217
• Description: 150ma Cmos Ldo Regulator
• Manufacturer: Catalyst Semiconductor

output. It has a 2.5MΩ pull-down resistor, which
assures that if EN pin is left open, the circuit is disabled.
VOUT is the LDO regulator output. A small 1μF
ceramic bypass capacitor is required between the V
(3) The device is not guaranteed to work outside its operating rating.
CAT6217
PIN DESCRIPTIONS
PIN FUNCTION
VIN is the supply pin for the LDO. A small 1μF
ceramic bypass capacitor is required between the V
pin and ground near the device. When using longer
connections to the power supply, C
increased without limit. The operating input voltage
range is from 2.3V to 5.5V.
EN is the enable control logic (active high) for the regulator
pin and ground for stability. For better transient
response, its value can be increased to 4.7μF.
ABSOLUTE MAXIMUM RATINGS
RECOMMENDED OPERATING CONDITIONS
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 T
Doc. No. MD-10011 Rev. C
Pin # Name Function
Parameter
V
V
Junction Temperature, T
Power Dissipation, P
Storage Temperature Range, T
Lead Temperature (soldering, 5 sec.)
ESD Rating (Human Body Model)
Parameter
V
V
Junction Temperature Range, T
Package Thermal Resistance (SOT23-5), θ
IN
EN
IN
EN
1
2
3
4
5
power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.
, V
VOUT LDO Output Voltage.
OUT
GND
BYP
VIN
EN
Supply voltage input.
Ground reference.
Enable input (active high); a 2.5MΩ
pull-down resistor is provided.
Optional bypass capacitor connection
for noise reduction and PSRR
enhancing.
D
J
S
J
IN
value can be
(1)
JA
A
(ambient temperature) is P
OUT
Internally Limited
IN
-0.3 to V
2
-40 to +125
-65 to +150
(3)
2.3 to 5.5
V
0 to 6.5
0 to V
Range
IN
Rating
BLOCK DIAGRAM
The capacitor should be located near the device. ESR
domain is 5mΩ to 500mΩ. V
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.
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.
+150
235
260
3
Figure 2. CAT6217 Functional Block Diagram
IN
BYP
IN
VIN
+0.3
EN
Dmax
(2)
= (T
Reference
Jmax
– T
°C/W
Unit
Unit
mW
°C
A
°C
°C
°C
kV
V
V
V
V
)/θ
JA
. Exceeding the maximum allowable
Characteristics subject to change without notice
LDO
Shutdown
Switch
GND
OUT
©
Catalyst Semiconductor, Inc.
can deliver a
VOUT
V
OUT