IR3720MTRPBF International Rectifier, IR3720MTRPBF Datasheet - Page 8

• Manufacturer Part Number: IR3720MTRPBF
• Description: IC POWER SUPPLY MONITOR 10-DFN
• Manufacturer: International Rectifier
• Series: TruePower™r

Specifications of IR3720MTRPBF

• Package / Case: 10-DFN
• Mounting Type: Surface Mount
• Current - Supply: 480µA
• Voltage - Supply: 3.135 V ~ 3.465 V
• Operating Temperature: 0°C ~ 125°C
• Applications: Power Supply Monitor
• Voltage - Input: -
• Input Voltage: 3.3V
• No. Of Outputs: 1
• Supply Voltage Range: 3.135V To 3.465V
• No. Of Pins: 10
• Operating Temperature Range: 0°C To +125°C
• Filter Terminals: SMD
• Input Voltage Primary Max: 3.3V
• Rohs Compliant: Yes
• Frequency: 400kHz
• Package: 10 Lead 3x3 DFN
• Vk Range: 0.5V - 1.8V
• Bias Supply Voltage: +3.3V +/-5%
• Junction Temperature: 0oC to 125oC
• Pbf: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Input: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

FUNCTIONAL DESCRIPTION
Please refer to the Functional Description Diagram
below. Power flow from the buck converter is the
product of output voltage times the current I
through the inductor.
Average power is measured with the aid of
International Rectifier’s proprietary TruePower™
circuit. Voltage, current, or the product of voltage Vo
and current is digitized over the interval of interest
and ported to the OUTPUT register. The VCS pin is
maintained at an average voltage equal to Vo.
Page 8 of 20
Figure 1 Functional Description Diagram
Vin
VDD
Bypass
VDD
Cap
Phase
R
T
V
REF
R
R
CS1
I
L
CS2
L
www.irf.com
VCS
L
C
flowing
C
DCR
CS1
CS2
IR3720
GND
VO
The full-scale voltage that can be measured is V
The full-scale positive current that can be measured
is
Full-scale current capability is designed by specifying
the external circuit values of equation 1.
The full scale power P
product of full-scale voltage and full scale current.
VO
VDD
I
ALERT#
FS
Resistor
Pull-up
EXTCLK
ADDR
SDA
SCL
ALERT#
=
V
R
IG
T
⋅
(
R
FS
CS
that can be measured is the
DCR
1
+
R
CS
2
)
External
.
Clock
09/09/08
FS
.
(1)