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PDF UMC33167 Data sheet ( Hoja de datos )
| Número de pieza | UMC33167 | |
| Descripción | STEP-UP/DOWN/INVERTING SWITCHING REGULATORS | |
| Fabricantes | Unisonic Technologies | |
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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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QW-R103-070.c
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UMC33167
Advance
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS
(VCC=12V, for typical values TA=+25°C, for min/max values TA is the operating ambient temperature range that
applies (Notes 4), unless otherwise noted.)
PARAMETER
SYMBOL TEST CONDITIONS
MIN TYP MAX UNIT
OSCILLATOR
Frequency (VCC=7.5V ~ 40V)
fOSC
TA=+25°C
TJ=TLOW ~THIGH
65 72 79 KHZ
62 81 KHZ
ERROR AMPLIFIER
Voltage Feedback Input Threshold
Line Regulation
Input Bias Current
Power Supply Rejection Ratio
Output Voltage High State
Swing
Low State
VFB(th)
RegLINE
IIB
PSRR
VOH
VOL
TA=+25°C
TJ=TLOW ~THIGH
VCC=7.5V~ 40V, TA=+25°C
VFB=VFB(th)+0.15V
VCC=7.5V~ 40V, f=120HZ
ISOURCE=75μA, VFB=4.5V
ISINK=0.4mA, VFB=5.5V
4.95
4.85
60
4.2
5.05 5.15
V
5.20 V
0.03 0.078 %/V
0.15 1.0
μA
80 dB
4.9 V
1.6 1.9
V
PWM COMPARATOR
Duty Cycle (VCC=20V)
DC(max) Maximum (VFB=0V)
DC(min) Minimum (VFB=0V)
92 95 100 %
0 0 0%
SWITCH OUTPUT
Output Voltage Source Saturation
Off-State Leakage
Current Limit Threshold
Output Voltage Rise
Switching Times
Time
Output Voltage Fall
Time
VSAT
ISW(off)
IPK(switch)
tR
tF
VCC=7.5V, ISOURCE=5.0A
VCC=40V, Pin 2 = GND
VCC=7.5V
VCC=40V,IPK=5.0A,
L=225μH, TA=+25°C
VCC-1.5 VCC-1.8
0 100
5.5 6.5 8.0
V
A
A
100 200
ns
50 100 ns
UNDERVOLTAGE LOCKOUT
Startup Threshold
Hysteresis
Vth(UVLO) VCC Increasing, TA=+25°C
5.5
5.9
6.3
VH(UVLO) (VCC Decreasing, TA=+25°C 0.6 0.9 1.2
V
V
TOTAL DEVICE
Power Supply Standby
VCC=12V, VComp<0.15V
36 100 μA
Current
(TA=+25°C)
Operating
ICC VCC=40V, Pin 1=GND for
maximum duty cycle
40 60 mA
Note 4: Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient
as possible.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet UMC33167.PDF ] | |
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