Document
UNISONIC TECHNOLOGIES CO., LTD
P2576/HV
LINEAR INTEGRATED CIRCUIT
3A STEP-DOWN VOLTAGE SWITCHING REGULATOR
DESCRIPTION
As a step-down (buck) switching regulator, the UTC P2576/HV provides drives 3A load. The UTC P2576/HV are simple because it only needs to use a minimum number of external components.
Frequency compensation and a fixes-frequency oscillator are in it. UTC P2576/HV can perform with standard inductors, and simplifying the switch mode power supplies’ design. UTC P2576/HV guarantees output load conditions and ±10% on the oscillator frequency. Its external shutdown is included with 50μA standby current. As well as thermal shutdown for full protection under fault conditions, the output switch has cycle by cycle current limiting.
FEATURES
* Output Current 3A * Input Voltage Range of 7V to 40V for P2576 and 7V to 60V for
P2576HV * Requires 4 External Components * Very High Efficiency * TTL Shutdown * Low Power Standby Mode * Thermal Shutdown, * Current Limit Protection * Internal Oscillator: 52 kHz Fixed Frequency
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
P2576L-xx-TA5-T
P2576G-xx-TA5-T
P2576L-xx-TB5-T
P2576G-xx-TB5-T
P2576L-xx-TQ5-R
P2576G-xx-TQ5-R
P2576L-xx-TQ5-T
P2576G-xx-TQ5-T
P2576L-xx-S08-R
P2576G-xx-S08-R
P2576L-xx-SH2-R
P2576G-xx-SH2-R
P2576HVL-xx-TQ5-R
P2576HVG-xx-TQ5-R
P2576HVL-xx-TQ5-T
P2576HVG-xx-TQ5-T
Note: xx: Output Voltage, refer to Marking Information.
1
1
1
Package TO-220-5 TO-220B TO-263-5 TO-263-5
SOP-8 HSOP-8 TO-263-5 TO-263-5
TO-220B
TO-220-5
TO-263-5 SOP-8
HSOP-8
Packing Tube Tube
Tape Reel Tube
Tape Reel Tape Reel Tape Reel
Tube
P2576XXG-xx-TQ5-T
(1) T: Tube, R: Tape Reel
(1)Packing Type
(2) TA5: TO-220-5, TB5: TO-220B, TQ5: TO-263-5
(2)Package Type
S08: SOP-8, SH2: HSOP-8
(3)Output Voltage Code (3) xx: refer to Marking Information
(4)Green Package
(4) G: Halogen Free and Lead Free, L: Lead Free
(5)Supply Voltage Code (5) Blank: 40V, HV: 60V
www.unisonic.com.tw Copyright © 2020 Unisonic Technologies Co., Ltd
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QW-R101-025.N
P2576/HV
MARKING INFORMATION
PACKAGE P2576
VOLTAGE CODE
TO-220B TO-220-5 TO-263-5
SOP-8 HSOP-8
50:5.0V 33:3.3V 12:12V 15:15V AD:ADJ
P2576HV TO-263-5
50:5.0V 33:3.3V 12:12V 15:15V AD:ADJ
LINEAR INTEGRATED CIRCUIT
MARKING
Lot Code Voltage Code
UTC P2576□ XXXX□□□□□□
L : Lead Free G: Halogen Free
Date Code
12345 8 765
Voltage Code
UTC P2576
1 234
Date Code L : Lead Free
G: Halogen Free Lot Code
Lot Code Voltage Code
UTC P2576HV□ XXXX□□□□□□
12345
L : Lead Free G: Halogen Free
Date Code
UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw
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QW-R101-025.N
P2576/HV
PIN CONFIGURATION
LINEAR INTEGRATED CIRCUIT
VIN VOUT GND FB ON/OFF TO-220B/TO-220-5/TO-263-5
VIN 1 VOUT 2 FB 3 ON/OFF 4
8 GND 7 GND 6 GND 5 GND
VIN 1 VOUT 2 FB 3 ON/OFF 4
GND
8 GND 7 GND 6 GND 5 GND
SOP-8
HSOP-8
PIN DESCRIPTIONS
For SOP-8/HSOP-8
PIN NO. PIN NAME
1 VIN 2 VOUT 3 FB
4 ON/ OFF
5,6,7,8
GND
PIN DESCRIPTION Input voltage Output voltage Feed back. ON/ OFF select pin, when connected to the ground the chip in operating normally. Ground
For TO-220B/TO-220-5/TO-263-5
PIN NO. PIN NAME
PIN DESCRIPTION
1 VIN Input voltage
2
VOUT
Output voltage
3
GND
Ground
4 FB Feed back.
5 ON/ OFF ON/ OFF select pin, when connected to the ground the chip in operating normally.
UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw
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QW-R101-025.N
P2576/HV
BLOCK DIAGRAM
LINEAR INTEGRATED CIRCUIT
ON / OFF
Current Source
bias
1.235V Reference
2.5V Regulator
Start up
Com+-p -
Com+p
FB
+Amp -
Frequency Compe-nsation
C+- omp
Pre-driver
50kHz OSC.
Thermal Shutdown
VIN
3A Switch
Output GND
UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw
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QW-R101-025.N
P2576/HV
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (TA=25°C, unless otherwise specified)
Supply Voltage
PARAMETER
Maximum Supply Voltage
P2576 P2576HV P2576 P2576HV
SYMBOL VCC
VCC(MAX)
RATINGS 40 60 45 65
UNITS V V V V
ON/ OFF Pin Input Voltage
VON/OFF
-0.3 ~ VIN
V
Output Voltage to Ground (Steady State)
VOUT
-1.0
V
Power Dissipation
PD
Internally Limited
mW
Junction Temperature
TJ
+150
°C
Operating Temperature
TOPR
-40 ~ +125
°C
Storage Temperature
TSTG
-65 ~ +150
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
ELECTRICAL CHARACTERISTICS
(TJ=25°C, When VOUT = 3.3V & 5V & ADJ, VIN = 12V;VOUT = 12V, VIN = 15V,VOUT = 15V, VIN = 18V, ILOAD=500mA,
unless otherwise specified)
PARAMETER
3.3V
Feedback Voltage
5.0V 12V
15V
SYMBOL
TEST CONDITIONS
7V≤VIN≤40V, 0.5A≤ILOAD≤3A
VOUT
8V≤VIN≤40V, 0.5A≤ILOAD≤3A 15V≤VIN≤40V, 0.5A≤ILOAD≤3A
18V≤VIN≤40V, 0.5A≤ILOAD≤3A
MIN TYP MAX UNIT 3.17 3.3 3.43 V 4.8 5.0 5.2 V 11.52 12.0 12.48 V 14.4 .