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SM72442 데이터시트(PDF) 3 Page - Texas Instruments

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부품명 SM72442
상세설명  Programmable Maximum Power Point Tracking Controller for Photovoltaic Solar Panels
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SM72442
www.ti.com
SNVS689H – OCTOBER 2010 – REVISED APRIL 2013
PIN DESCRIPTIONS
Pin
Name
Description
1
RST
Active low signal. External reset input signal to the digital circuit.
2
NC1
Reserved for test only. This pin should be grounded.
3
VDDD
Digital supply voltage. This pin should be connected to a 5V supply, and bypassed to VSSD with a 0.1 µF monolithic
ceramic capacitor.
4
VSSD
Digital ground. The ground return for the digital supply and signals.
5
NC2
No Connect. This pin should be pulled up to the 5V supply using 10k resistor.
6
I2C0
Addressing for I2C communication.
7
I2C1
Addressing for I2C communication.
8
SCL
I2C clock.
9
SDA
I2C data.
10
NC3
Reserved for test only. This pin should be grounded.
11
PM_OUT
When Panel Mode is active, this pin will output a 400 kHz square wave signal with amplitude of 5V. Otherwise, it stays
low.
12
VDDA
Analog supply voltage. This voltage is also used as the reference voltage. This pin should be connected to a 5V
supply, and bypassed to VSSA with a 1 µF and 0.1 µF monolithic ceramic capacitor.
13
VSSA
Analog ground. The ground return for the analog supply and signals.
14
A0
A/D Input Channel 0. Connect a resistor divider to 5V supply to set the maximum output voltage. Please refer to the
application section for more information on setting the resistor value.
15
AVIN
Input voltage sensing pin.
16
A2
A/D Input Channel 2. Connect a resistor divider to a 5V supply to set the condition to enter and exit Panel Mode (PM).
Refer to configurable modes for SM72442 in the application section.
17
AVOUT
Output voltage sensing pin.
18
A4
A/D Input Channel 4. Connect a resistor divider to a 5V supply to set the maximum output current. Please refer to the
application section for more information on setting the resistor value.
19
AIIN
Input current sensing pin.
20
A6
A/D Input Channel 6. Connect a resistor divider to a 5V supply to set the output voltage slew rate and various PM
configurations. Refer to configurable modes for SM72442 in the application section.
21
AIOUT
Output current sensing pin.
22
I2C2
Addressing for I2C communication.
23
NC4
No Connect. This pin should be connected with 60.4k pull-up resistor to 5V.
24
LIB
Low side boost PWM output.
25
HIB
High side boost PWM output.
26
HIA
High side buck PWM output.
27
LIA
Low side buck PWM output.
28
PM
Panel Mode Pin. Active low. Pulling this pin low will force the chip into Panel Mode.
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Copyright © 2010–2013, Texas Instruments Incorporated
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