DataSheet.jp

PAC1921 の電気的特性と機能

PAC1921のメーカーはMicrochipです、この部品の機能は「High-Side Power/Current Monitor」です。


製品の詳細 ( Datasheet PDF )

部品番号 PAC1921
部品説明 High-Side Power/Current Monitor
メーカ Microchip
ロゴ Microchip ロゴ 




このページの下部にプレビューとPAC1921ダウンロード(pdfファイル)リンクがあります。

Total 30 pages

No Preview Available !

PAC1921 Datasheet, PAC1921 PDF,ピン配置, 機能
PAC1921
High-Side Power/Current Monitor with Analog Output
Features
• Configurable Measurement Type Output: Power,
Current or Bus Voltage
• Configurable Voltage Output (3V, 2V, 1.5V, 1V)
- All output values also available over SMBus
• New Device Topology
- Provides integrated average power
measurement
- Power measurements provided to
microcontroller with ADC inputs
- Unique lossless integrating architecture
allows operation at low sense voltages
- Output voltage proportional to selected
measurement
• High-Side Current Sensor
- 100 mV full-scale current sense voltage range
- Second-order delta-sigma ADC with 11-bit or
14-bit resolution
- Selectable current binary gain ranges: 1x
through 128x
• 1% Power Measurement Accuracy
• Auto-Zero Offset
• Auto Sleep State
- Automatically shifts to low-power state
(3.5 µA)
• Power Supply
- VDD = 3.3V nominal (operational range 3.0V
to 5.5V)
• Bus Range 0V to 32V
• No Input Filters Required
• Available in a 10-pin 3 mm x 3 mm VDFN RoHS
Compliant Package
Applications
• Diagnostic Equipment
• Servers
• Power Supplies
• Industrial and Power Management Systems
• Notebook and Desktop Computers
Description
The PAC1921 is a dedicated power-monitoring device
with a configurable analog output that can present
power, current or voltage. The PAC1921 is designed for
power measurement and diagnostic systems that
cannot allow for latency when performing high-speed
power management. Measurements are accumulated
in large lossless registers, allowing for integration
periods of 500 µs to 2.9 seconds. The measurement is
averaged and presented on the analog output with a
full scale range of 3V, 2V, 1.5V or 1.0V.
The PAC1921 has a READ/INT pin for host control of the
measurement integration period. This pin can be used to
synchronize readings of multiple buses between several
devices. Alternatively, PAC1921 is able to provide
outputs in a free-running mode. Information is provided
on the OUT pin and is available via SMBus if desired.
Data sampling and output attributes, such as the internal
ADC resolution (11-bit or 14-bit) and sample rate, are
configurable. The SMBus interface has more selections
for user-configurable options.
The PAC1921 is a 1% accurate power measurement
device that measures and cancels the zero offset from
the input pins. The PAC1921 was designed to monitor
power rails from 0-32V with a full-scale capability of
100 mV across the sense resistor. No input filters are
required for this device.
Package Types
PAC1921
3x3 VDFN*
VDD 1
SENSE + 2
SENSE - 3
OUT 4
GND 5
10 SM_CLK
9 SM_DATA
EP
11
8 READ/INT
7 RESERVED
6 ADDR_SEL
*Includes Exposed Thermal Pad (EP), see Table 3-1
2012-2016 Microchip Technology Inc.
DS20005293D-page 1

1 Page





PAC1921 pdf, ピン配列
PAC1921
1.0 ELECTRICAL CHARACTERISTICS
1.1 Electrical Specifications
Absolute Maximum Ratings(†)
VDD pin............................................................................................................................................................-0.3 to 6.0V
Voltage on SENSE- and SENSE+ pins............................................................................................................-0.3 to 42V
Voltage on ADDR_SEL pin .............................................................................................................................-0.3 to 2.6V
Voltage on any other pin to GND ....................................................................................................................-0.3 to 6.0V
Voltage between Sense pins (|(SENSE+ – SENSE-)|) ...............................................................................................40V
Input current to any pin except VDD ...................................................................................................................... ±10 mA
Output short circuit current.............................................................................................................................. Continuous
Package Power Dissipation (Note) ...............................................................................................0.5W up to TA = +85°C
Junction to Ambient (JA) ....................................................................................................................................+78°C/W
Operating Ambient Temperature Range ....................................................................................................... -40 to +85°C
Storage Temperature Range ....................................................................................................................... -55 to +150°C
ESD Rating - All pins - HBM ...................................................................................................................................2000V
† Notice: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.
This is a stress rating only and functional operation of the device at those or any other conditions above those indicated
in the operation listings of this specification is not implied. Exposure above maximum rating conditions for extended
periods may affect device reliability.
Note:
The Package Power Dissipation specification assumes a recommended thermal via design consisting of a
2 x 2 matrix of 0.3 mm (12 mil) vias at 1.0 mm pitch connected to the ground plane with a 1.6 mm x 2.3 mm
thermal landing
2012-2016 Microchip Technology Inc.
DS20005293D-page 3


3Pages


PAC1921 電子部品, 半導体
PAC1921
TABLE 1-1: ELECTRICAL CHARACTERISTICS (CONTINUED)
Electrical Characteristics: Unless otherwise specified, maximum values are at TA = -40°C to +85°C, VDD = 3V to 5.5V,
VBUS = 0V to 32V; typical values are at TA = +25°C, VDD = 3.3V, VBUS = 24V, VSENSE = (SENSE+ – SENSE-) = 0V
Characteristic
Sym.
Min. Typ.
Max.
Unit
Conditions
Digital I/O Pins (READ/INT, SMBus pins)
Output Low Voltage
Input High Voltage
Input Low Voltage
Leakage Current
VOL
VIH
VIL
ILEAK
2.0
-5
0.4 V Sinking 8 mA
—V
0.8 V
5 µA Powered or unpowered,
TA < +85°C maximum
TABLE 1-2: SMBUS MODULE SPECIFICATIONS
Electrical Characteristics: Unless otherwise specified, maximum values are at TA = -40°C to +85°C, VDD = 3V to 5.5V,
VBUS = 0V to 32V; typical values are at TA = +25°C, VDD = 3.3V, VBUS = 24V, VSENSE = (SENSE+ – SENSE-) = 0V
Characteristic
Sym.
Min.
Typ. Max. Units
Conditions
SMBus Interface
Input Capacitance
SMBus Timing
Clock Frequency
Spike Suppression
CIN
fSMB
tSP
— 4 10 pF
10 — 400 kHz
0 — 50 ns Pulse width of spikes that
must be suppressed by the
input filter
Bus Free Time
Stop to Start
Start Setup Time
Start Hold Time
Stop Setup Time
Data Hold Time
Data Hold Time
tBUF
tSU:STA
tHD:STA
tSU:STO
tHD:DAT
tHD:DAT
1.3 — — µs
0.6 — — µs
0.6 — — µs
0.6 — — µs
0 — — µs When transmitting to the
master
0.3 — — µs When receiving from the
master
Data Setup Time
Clock Low Period
Clock High Period
Clock/Data Fall Time
Clock/Data Rise Time
Capacitive Load
Time Out
Idle Reset
tSU:DAT
tLOW
tHIGH
tFALL
tRISE
CLOAD
tTIMEOUT
tIDLE_RESET
0.6 — — µs
1.3 — — µs
0.6 — — µs
— — 300 ns Minimum = 20 + 0.1 CLOAD ns
— — 300 ns Minimum = 20 + 0.1 CLOAD ns
— — 400 pF Total per bus line
25 — 35 ms Disabled by default
350 — — µs Disabled by default (see
Section 5.2 “SMBus
Timeout”)
DS20005293D-page 6
2012-2016 Microchip Technology Inc.

6 Page



ページ 合計 : 30 ページ
 
PDF
ダウンロード
[ PAC1921 データシート.PDF ]


データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。


共有リンク

Link :


部品番号部品説明メーカ
PAC1921

High-Side Power/Current Monitor

Microchip
Microchip


www.DataSheet.jp    |   2020   |  メール    |   最新    |   Sitemap