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UC3177のメーカーはUnitrodeです、この部品の機能は「Full Bridge Power Amplifier」です。 |
部品番号 | UC3177 |
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部品説明 | Full Bridge Power Amplifier | ||
メーカ | Unitrode | ||
ロゴ | |||
このページの下部にプレビューとUC3177ダウンロード(pdfファイル)リンクがあります。 Total 4 pages
UC3176
UC3177
Full Bridge Power Amplifier
FEATURES
• Dual Power Operational Amplifiers
• ±2A Output Current Guaranteed
• Precision Current Sense Amplifier
• Two Supply Monitoring Inputs
• Parking Function and Under-Voltage
Lockout
• Safe Operating Area Protection
• 3V to 35V Operation
DESCRIPTION
The UC3176/7 family of full bridge power amplifiers is rated for a continu-
ous output current of 2A. Intended for use in demanding servo applica-
tions such as disk head positioning, the onboard current sense amplifier
can be used to obtain precision control of load current, or where voltage
mode drive is required, a standard voltage feedback scheme can be used.
Output stage protection includes foldback current limiting and thermal
shutdown, resulting in a very rugged device.
Auxiliary functions on this device include a dual input under-voltage com-
parator that can be programmed to respond to low voltage conditions on
two independent supplies. In response to an under-voltage condition the
power Op-Amps are inhibited and a high current, 100mA, open collector
drive output is activated. A separate Park/Inhibit command input.
The devices are operational over a 3V to 35V supply range. Internal un-
der-voltage lockout provides predictable power-up and power-down char-
acteristics.
BLOCK DIAGRAM
SLUS285A - OCTOBER 1994 - REVISED JANUARY 2005
1 Page UC3176
UC3177
ELECTRICAL CHARACTERISTICS:Unless otherwise stated, specifications hold for TA = 0 to 70°C, +VIN = 12V, TA = TJ.
PARAMETER
Current Sense Amplifier
Input Offset Voltage
Thermal Gradient Sensitivity
PSRR
Gain
Slew Rate
3dB Bandwidth
MAX Output Current
Output Saturation Voltage
Under-Voltage Comparator
Threshold Voltage
Input Current
Supply OK VSAT (UC3177 Only)
Supply OK Leakage (UC3177 Only)
Park/Inhibit
Park/Inhibit Thl’d
Park/Inhibit Input Current
Parking Drive Saturation Voltage
Parking Drive Leakage
Thermal Shutdown
Shutdown Temperature
TEST CONDITIONS
MIN. TYP. MAX. UNITS
VCM = 0V, A+ / REF at 6V
REF = 2V to 20V, +VIN = 35, change with REF
Input voltage
3 mV
600 µV/V
+VIN = 20V, REF = 10V Pd = 20W @ A or B
Output
5.0 75.0 µV/W
REF = 2.5V, +VIN = 5 to 35V
/AISINK-BISINK / ≤ 0.5V
70 100
dB
7.8 8.0 8.1 V/V
2 V/µS
1 MHz
ISOURCE = +VIN - VOUT = 0.5V
ISOURCE = 1.5mA, High Side
ISINK = 5mA, Low Side
2.5 3.5
mA
0.15 0.30 V
1.4 1.85 V
Low to High, other input at 5V
Threshold Hysteresis
Input = 2V, other input at 5V
IOUT = 5mA
VOUT = 35V
1.44
50
–2.00
1.50
70
–.05
1.56
80
0.45
5
V
mV
µA
V
µA
At threshold
IOUT = 100mA
VOUT = 35V
1.1 1.3 1.7 V
60 100 µA
0.3 0.7 V
15 µA
165 °C
Output saturation voltage vs. current. Maximum source current vs. + VIN – Crossover current error
VOUT.
characteristic.
3
3Pages | |||
ページ | 合計 : 4 ページ | ||
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PDF ダウンロード | [ UC3177 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。 |
部品番号 | 部品説明 | メーカ |
UC3172A | Full Bridge Power Amplifier | Texas Instruments |
UC3173A | Full Bridge Power Amplifier | Texas Instruments |
UC3176 | Full Bridge Power Amplifier | Unitrode |
UC3176 | Full Bridge Power Amplifier (Rev. A) | Texas Instruments |