Switching Regulator. STRA6169 Datasheet

STRA6169 Regulator. Datasheet pdf. Equivalent


Allegro Microsystems STRA6169
SwRitecghuinlagtors
ABSOLUTE MAXIMUM RATINGS
at TA = +25°C
Control Supply Voltage, VCC . . . . 35 V
Drain-Source Voltage, VDSS . . . . . . 800 V
Drain Switching Current, ID . . . . 1.2 A*
Peak Drain Switching Current,
IDM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 A
Single-Pulse Avalanche Energy,
EAS . . . . . . . . . . . . . . . . . . . . . 7 mJ
Start-Up Pin Voltage Range,
Vstartup . . . . . . . . . –0.3 V to +600 V
OCP Voltage Range,
VOCP . . . . . . . . . . . . –0.5 V to +6 V
FB/OLP Voltage Range,
VFB/OLP . . . . . . . . . . –0.5 V to +10 V
Package Power Dissipation, PD
control (VCC × ICC(ON)) . . . . . 0.15 W
MOSFET (VDSS × ID) . . . . . . 1.35 W
total . . . . . . . . . . . . . . . . . . . . 1.5 W
MOSFET Channel Temp., TJ . +150°C
Internal Frame Temp., TF . . . . +125°C
Operating Temperature Range,
TA . . . . . . . . . . . -20°C to +125°C†
Storage Temperature Range,
TS . . . . . . . . . . . . -40°C to +125°C
* Drain switching current is limited by temperature
(page 2) and safe operating area (page 4).
†For the availability of parts meeting -40°C
requirements, contact Allegro’s Sales Represen-
tative.
STR-A6169
Universal-Input/5 W
Flyback Switching Regulator
The STR-A6169 is a PRC topology (fixed off-time) regulator
specifically designed to satisfy the requirements for increased integration
and reliability in flyback converters. It incorporates a primary control
and drive circuit with avalanche-rated 800 V power MOSFET.
Covering the power range from below 8 watts for a 230 VAC input,
or 5 watts for a universal (85 to 264 VAC) input, this device can be used
in a range of applications, from DVD and VCR players to ac adapters
for cellular phones and digital cameras. An auto-standby function
reduces power consumption at light load, while multiple protections,
including the avalanche-energy guaranteed MOSFET, provide high
reliability of system design. Devices with an increased output power
rating are the STR-A6151 and STR-A6159.
Cycle-by-cycle current limiting, undervoltage lockout with hyster-
esis, overvoltage protection, and thermal shutdown protect the power
supply during the normal overload and fault conditions. Overvoltage
protection and thermal shutdown are latched after a short delay. The
latch may be reset by cycling the input supply. Low start-up current and
a low-power standby mode selected from the secondary circuit completes
a comprehensive suite of features. The STR-A6169 is provided in an 8-
pin mini-DIP plastic package.
FEATURES AND BENEFITS
Rugged 800 V Avalanche-Rated MOSFET
Simplified Surge Absorption
No VDSS Derating Required
19.2 rDS(on)
Two Operational Modes by Automatic Switching:
PRC Mode for Normal Operation
Burst Mode for Stand-By Operation or Light Loads
Built-In Leading Edge Blanking
Low Start-Up Current
Start-Up Circuit Disabled in Operation
Low Operating Current (1.5 mA typ)
Automatic Burst Stand-By (intermittent operation)
Input Power <0.1 W at No Load
— continued
Always order by complete part number, e.g., STR-A6169 .
Sanken Power Devices
from Allegro MicroSystems


STRA6169 Datasheet
Recommendation STRA6169 Datasheet
Part STRA6169
Description Universal-Input/5W Flyback Switching Regulator
Feature STRA6169; Data Sheet 28102.24 SwRitecghuinlagtors ABSOLUTE MAXIMUM RATINGS at TA = +25°C Control Supply Volta.
Manufacture Allegro Microsystems
Datasheet
Download STRA6169 Datasheet




Allegro Microsystems STRA6169
STR-A6169
Universal-Input/5 W
Flyback Switching Regulator
FUNCTIONAL BLOCK DIAGRAM
SwRitecghuinlagtors
FEATURES AND BENEFITS (cont’d)
Auto-Bias Function
Stable Burst Operation Without Generating Interference
Internal Off-Timer Circuit
Built-In Constant-Voltage Drive
Multiple Protections:
Pulse-by-Pulse Overcurrent Protection
Overload Protection with Auto Recovery
Latching Overvoltage Protection
Undervoltage Lockout with Hysteresis
Latching Thermal Shutdown
Molded Small-Size 8-Pin Package
For Low-Height SMPS
Polarized to Prevent Backwards Assembly
115 Northeast Cutoff, Box 15036
2 Worcester, Massachusetts 01615-0036
Copyright © 2005 Allegro MicroSystems, Inc.



Allegro Microsystems STRA6169
SwRitecghuinlagtors
STR-A6169
Universal-Input/5 W
Flyback Switching Regulator
ELECTRICAL CHARACTERISTICS at TA = 25°C, VCC = 20 V (unless otherwise specified).
Pin Ratings
Characteristic
No. Symbol Test Conditions
Min Typ Max Units
Drain-to-Source Breakdown Volt. 8 - 1 VDSS
Drain Leakage Current
8-1
IDSS
On-State Resistance
MOSFET Switching Time
Operation Start Voltage
Operation Stop Voltage
Circuit Current in Operation
Circuit Current in Non-Operation
Auto-Bias Threshold Voltage
VCC(bias) – VCC(OFF)
Maximum OFF Time
OCP Threshold Voltage
Leading Edge Blanking Time
Burst Threshold Voltage
OLP Threshold Voltage
Current at OLP Operation
Maximum FB Current
Start-Up Current
Start-Up Circuit Leakage Current
OVP Operation Voltage
OVP/TSD Latch Sustaining Current
OVP/TSD Latch Release Voltage
Thermal Shutdown
Thermal Resistance
8-1
8-3
2-3
2-3
2-3
2-3
2-3
-
8-3
1-3
8-3
4-3
4-3
4-3
4-3
5-3
5-3
2-3
2-3
2-3
-
-
rDS(on)
tf
VCC(ON)
VCC(OFF)
ICC(ON)
ICC(OFF)
VCC(bias)
-
tOFF
VOCP
tb
Vburst
VOLP
IOLP
IFB(MAX)
Istartup
Istart(leak)
VCC(OVP)
ICC(H)
VCC
TJ
RθJF
ID = 300 µA,
V1 – V3 = 0 V (short)
VDS = 800 V,
V1 – V3 = 0 V (short)
ID = 0.4 A
-
VCC = 0 19.2 V
VCC = 19.2 9 V
-
VCC = 14 V
VCC = 20 9.6 V
-
-
-
-
-
-
-
VCC = 15 V
-
VCC = 0 34.1 V
VCC =34.1 8.5 V
VCC =34.1 6.6 V
-
-
800 -
-V
- - 300 µA
-
-
16
9.0
-
-
9.6
0.2
7.3
0.69
200
0.70
6.5
-18
227
340
-
28.7
-
6.6
135
-
-
-
17.5
10
-
-
10.6
0.6
8.0
0.77
320
0.79
7.2
-26
300
790
-
31.2
-
7.3
-
-
19.2
250 ns
19.2 V
11 V
4.0 mA
50 µA
11.6 V
-V
8.7 µs
0.86 V
480 ns
0.88 V
7.9 V
-35 µA
388 µA
1230 µA
30 µA
34.1 V
200 µA
8.0 V
- °C
52 °C/W
WARNING — These devices are designed to be operated at lethal voltages and energy levels. Circuit designs
that embody these components must conform with applicable safety requirements. Precautions must
be taken to prevent accidental contact with power-line potentials. Do not connect grounded test
equipment.
The use of an isolation transformer is recommended during circuit development and breadboarding.
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