datasheetbank_Logo
Integrated circuits, Transistor, Semiconductors Search and Datasheet PDF Download Site

ADP1043A View Datasheet(PDF) - Analog Devices

Part Name
Description
View to exact match
ADP1043A Datasheet PDF : 72 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
ADP1043A
VS2 1
AGND 2
VS1 3
CS2– 4
CS2+ 5
ACSNS 6
CS1 7
PGND 8
PIN 1
INDICATOR
TOP VIEW
(Not to Scale)
24 SHAREi
23 SHAREo
22 PGOOD1
21 PGOOD2
20 FLAGIN
19 PSON
18 SDA
17 SCL
NOTES
1. THE ADP1043A HAS AN EXPOSED THERMAL PAD ON THE UNDERSIDE
OF THE PACKAGE. FOR INCREASED RELIABILITY OF THE SOLDER
JOINTS AND MAXIMUM THERMAL CAPABILITY, IT IS RECOMMENDED
THAT THE PAD BE SOLDERED TO THE PCB GROUND PLANE.
Figure 3. Pin Configuration
Table 4. Pin Function Descriptions
Pin No.
Mnemonic Description
1
VS2
Power Supply Output Sense Input. This signal is referred to PGND. Input to a low frequency Σ-Δ ADC. Nominal
voltage at this pin should be 1 V. The resistor divider on this input must have a tolerance specification of 0.5%
or better to allow for trimming.
2
AGND
Analog Ground. This pin is the ground for the analog circuitry of the ADP1043A. Star connect to DGND.
3
VS1
Local Voltage Sense Input. This signal is referred to PGND. Input to a high frequency Σ-Δ ADC. Nominal voltage
at this pin should be 1 V. The resistor divider on this input must have a tolerance specification of 0.5% or
better to allow for trimming.
4
CS2−
Inverting Differential Current Sense Input. Nominal voltage at this pin should be 1 V for best operation. When
using high-side current sensing in a 12 V application, place a 110 kΩ resistor between the sense resistor and
this pin. When using low-side current sensing, place a 10 kΩ resistor between the sense resistor and this pin.
When using high-side current sensing, use the formula R = (VCOMMONMODE − 1)/100 μA. A 0.1% resistor must be
used to connect this circuit.
5
CS2+
Noninverting Differential Current Sense Input. Nominal voltage at this pin should be 1 V for best operation.
When using high-side current sensing in a 12 V application, place a 110 kΩ resistor between the sense resistor
and this pin. When using low-side current sensing, place a 10 kΩ resistor between the sense resistor and this
pin. When using high-side current sensing, use the formula R = (VCOMMONMODE − 1)/100 μA. A 0.1% resistor must
be used to connect this circuit.
6
ACSNS
AC Sense Input. This input is connected upstream of the main inductor through a resistor divider network.
The nominal voltage for this circuit is 0.45 V. This signal is referred to PGND.
7
CS1
Primary Side Current Sense Input. This pin is the current transformer input to measure and control the primary
side current. This signal is referred to PGND. The resistors on this input must have a tolerance specification of
0.5% or better to allow for trimming.
8
PGND
Power Ground. This pin is the ground connection for the main power rail of the power supply. Star connect
to AGND.
9
SR1
Synchronous Rectifier Output. This PWM output connects to the input of a FET driver. This pin can be disabled
when not in use. This signal is referred to AGND.
10
SR2
Synchronous Rectifier Output. This PWM output connects to the input of a FET driver. This pin can be disabled
when not in use. This signal is referred to AGND.
11
OUTA
PWM Output for Primary Side Switch. This pin can be disabled when not in use. This signal is referred to AGND.
12
OUTB
PWM Output for Primary Side Switch. This pin can be disabled when not in use. This signal is referred to AGND.
13
OUTC
PWM Output for Primary Side Switch. This pin can be disabled when not in use. This signal is referred to AGND.
14
OUTD
PWM Output for Primary Side Switch. This pin can be disabled when not in use. This signal is referred to AGND.
15
OUTAUX
Auxiliary PWM Output. This pin can be disabled when not in use. This signal is referred to AGND.
16
GATE
OrFET Gate Drive Output (Open Drain). This signal is referred to AGND.
17
SCL
I2C Serial Clock Input. This signal is referred to AGND.
18
SDA
I2C Serial Data Input and Output (Open Drain). This signal is referred to AGND.
Rev. 0 | Page 9 of 72
 

Share Link: 

datasheetbank.com [ Privacy Policy ] [ Request Datasheet ] [ Contact Us ]