IRU1206-33CY International Rectifier, IRU1206-33CY Datasheet - Page 3

• Manufacturer Part Number: IRU1206-33CY
• Description: IC REG VLDO 3.3V 1.0A SOT-223
• Manufacturer: International Rectifier

Specifications of IRU1206-33CY

• Regulator Topology: Positive Fixed
• Voltage - Output: 3.3V
• Voltage - Input: Up to 12V
• Voltage - Dropout (typical): 0.5V @ 1A
• Number Of Regulators: 1
• Current - Output: 1A
• Current - Limit (min): 1.1A
• Operating Temperature: 0°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: SOT-223 (3 leads + Tab), SC-73, TO-261
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *IRU1206-33CY

PARAMETER
IRU1207, IRU1209
Ground Current - SD Activated
Enable Pin Input LO Voltage
Enable Pin Input HI Voltage
Enable Pin Input LO Current
Enable Pin Input HI Current
IRU1207, IRU1208
Flag Output Threshold Voltage
Flag Output Hysteresis Voltage
Flag Output Saturation Voltage
Note 1: Low duty cycle pulse testing with Kelvin con-
nections is required in order to maintain accurate data.
Note 2: Dropout voltage is defined as the minimum dif-
ferential voltage between V
tain regulation at V
voltage drops 1% below its nominal value.
PIN DESCRIPTIONS
APPLICATION INFORMATION
Stability
The IRU120X series of regulators require the use of an
output capacitor as part of the frequency compensation
in order to make the regulator stable. A minimum of 2.2µF
capacitance and the ESR in the range of 0.5 to 2Ω in-
sures the stability of the system.
(IRU1207, IRU1209)
(IRU1207, IRU1208)
(IRU1208, IRU1209)
PIN SYMBOL
(All devices)
(All devices)
(All devices)
Enable
V
Flag
Gnd
Adj
V
OUT
IN
OUT
. It is measured when the output
The input pin of the regulator. Typically a large storage capacitor is connected from this pin
to ground to insure that the input voltage does not sag below the minimum drop out voltage
during the load transient response. This pin must always be 0.6V higher than V
for the device to regulate properly.
The output of the regulator. A minimum of 2.2µF capacitor must be connected from this pin
to ground.
Ground pin. This pin must be connected to the lowest potential in the system and all other
pins must be at higher potential with respect to this pin.
Enable pin. A low signal or left open on this pin shuts down the output. This pin must be tied
HI or to V
An open collector output that switches low when the output voltage drops about 4% below
its expected regulated voltage.
A resistor divider from this pin to the V
PIN DESCRIPTION
IN
and V
IN
IRU1206/IRU1207/IRU1208/IRU1209(PbF)
for normal operation.
V
V
OUT
V
V
SYM
I
V
Q(SD)
TH(FG)
F(SAT)
EN(L)
EN(L)
HYS
required to main-
Enable=Open
Regulator OFF (Note 4)
Regulator ON (Note 4)
V
V
Output Ramping Up
Io=5mA
Io=500µA
EN(L)
EN(L)
=0V to 0.8V (Note 4)
=2V to Vin (Note 4)
TEST CONDITION
www.irf.com
Note 3: Ground current is the regulator quiescent cur-
rent plus the pass transistor current. The total current
from the supply is the sum of the load current plus the
ground pin current.
Note 4: The specification applies for the junction tem-
perature of 0 to +125 C.
OUT
pin and ground sets the output voltage.
Table 1 - Output voltage vs. part number.
Part Number
IRU1206-18
IRU1206-25
IRU1206-33
IRU1207-18
IRU1207-25
IRU1207-33
IRU1208
IRU1209
MIN
2
TYP
0.01
100
400
230
0.1
0.8
Voltage
Output
1.24V
1.24V
5
1.8V
2.5V
3.3V
1.8V
2.5V
3.3V
MAX
600
0.8
1
2
OUT
UNITS
in order
%V
%V
mV
µA
µA
µA
V
V
O
O
3