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UMC33167 の電気的特性と機能

UMC33167のメーカーはUnisonic Technologiesです、この部品の機能は「STEP-UP/DOWN/INVERTING SWITCHING REGULATORS」です。


製品の詳細 ( Datasheet PDF )

部品番号 UMC33167
部品説明 STEP-UP/DOWN/INVERTING SWITCHING REGULATORS
メーカ Unisonic Technologies
ロゴ Unisonic Technologies ロゴ 




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UMC33167 Datasheet, UMC33167 PDF,ピン配置, 機能
UNISONIC TECHNOLOGIES CO., LTD
UMC33167
Advance
LINEAR INTEGRATED CIRCUIT
5.0A, STEP-UP/DOWN/
INVERTING SWITCHING
REGULATORS
DESCRIPTION
The UTC UMC33167 series are high performance fixed frequency
power switching regulators that contain the primary functions required
for dc-to-dc converters. This series was specifically designed to be
incorporated in step-down and voltage-inverting configurations with a
minimum number of external components and can also be used cost
effectively in step-up applications.
These devices consist of an internal temperature compensated
reference, fixed frequency oscillator with on-chip timing components,
latching pulse width modulator for single pulse metering, high gain
error amplifier, and a high current output switch.
Protective features consist of cycle-by-cycle current limiting,
undervoltage lockout, and thermal shutdown. Also included is a low
power standby mode that reduces power supply current to 36μA.
FEATURES
* Output Switch Current in Excess of 5.0A
* Fixed Frequency Oscillator (72kHz) with On-Chip Timing
* Provides 5.05V Output without External Resistor Divider
* Precision 2% Reference
* 0% ~ 95% Output Duty Cycle
* Cycle-by-Cycle Current Limiting
* Undervoltage Lockout with Hysteresis
* Internal Thermal Shutdown
* Operation from 7.5V ~ 40V
* Standby Mode Reduces Power Supply Current to 36μA
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
UMC33167L-TA5-T
UMC33167G-TA5-T
UMC33167L-TB5-T
UMC33167G-TB5-T
Package
TO-220-5
TO-220B
Packing
Tube
Tube
MC33167L-TA5-T
(1) Packing Type
(2) Package Type
(3) Green Package
(1) T: Tube
(2) TA5: TO-220-5, TB5: TO-220B
(3) L: Lead Free, G: Halogen Free and Lead Free
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
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UMC33167 pdf, ピン配列
UMC33167
BLOCK DIAGRAM
Advance
LINEAR INTEGRATED CIRCUIT
+
Oscillator
+
- PWM
ILIMIT
+
-
S
Q
R
PWM Latch
+
UVLO -
Thermal
Shutdown
3
GND
+
100μA
120
5
COMP
5.50V
Reference
EA +
-
4 VCC
2 SW
+
1 FB
Figure 1 Simplified Block Diagram (Step Down Application)
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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UMC33167 電子部品, 半導体
UMC33167
Advance
LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CURRENT
+
Oscillator
+
- PWM
ILIMIT
+
-
S
Q
R
PWM Latch
+
UVLO -
VIN
12V
4
VCC
+
CIN
330μF
2 SW
D1
1N5825
Thermal
Shutdown
3 GND
+
100μA
120
5.50V
Reference
EA +
-
5
COMP CF
0.1u+F
RF
68K
L
190uH
+
1 FB R2
6.8K
VO
5.05V/5.0A
+ CO
4700uF
R1
The Step-Down Converter application is shown in Figure 3. The output switch transistor Q1 interrupts the input
voltage, generating a squarewave at the LCO filter input. The filter averages the squarewaves, producing a dc output
voltage that can be set to any level between VIN and VREF by controlling the percent conduction time of Q1 to that of
the total oscillator cycle time. If the converter design requires an output voltage greater than 5.05V, resistor R1 must
be added to form a divider network at the feedback input.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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部品番号部品説明メーカ
UMC33167

STEP-UP/DOWN/INVERTING SWITCHING REGULATORS

Unisonic Technologies
Unisonic Technologies


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