JW5052S
18V/2A
Sync. Step-Down Converter
DESCRIPTION
FEATURES
The JW ®5052S is a current mode monolithic buck
voltage converter. Operating with an input range
of 3.7~18V, the JW5052S delivers 2A of
continuous output current with two integrated
N-Channel MOSFETs. At light loads, regulators
operate in low frequency to maintain high
efficiency and low output ripple.
The JW5052S guarantees robustness with short
circuit protection, thermal protection,
current
run-away protection, and input under voltage
lockout.
The JW5052S is available in a 6-pin TSOT23-6
package, which provides a compact solution with
minimal external components.
Company’s Logo is Protected, “JW” and “JOULWATT” are Registered
Trademarks of JoulWatt technology Inc.
3.7V to 18V operating input range
2A output current
Up to 95% efficiency
High efficiency (>80%) at light load
Fixed 800kHz Switching frequency
Input under voltage lockout
Start-up current run-away protection
Over current protection and Hiccup
Thermal protection
Available in TSOT23-6 package
APPLICATIONS
Distributed Power Systems
Networking Systems
FPGA, DSP, ASIC Power Supplies
Green Electronics/ Appliances
Notebook Computers
TYPICAL APPLICATION
3.3V/2A Step Down Regulator
C3 100nF
L 4.7μH
Vin
4.7V TO 18V
VIN
BST
SW
EN
JW5052S
FB
R1
100k
C1
10uF
R3 49.9k
R2
11k
GND
Vout
3.3V/2A
C2
22uF
JW5052S Rev.0.85
JoulWatt® Proprietary Information. Patent Protected.
2019/03/12
Unauthorized Photocopy and Duplication Prohibited.
1
JW5052S
JoulWatt
ORDER INFORMATION
DEVICE
1)
2)
PACKAGE
TOP MARKING
JWHY□
JW5052STSOTB#TRPBF
TSOT23-6
YW□□□
Notes:
JW
# TRPBF
PB Free
Tape and Reel(If”TR”is not shown, it means tube)
Package Code
Part No.
1)
JW
2) Line1:
Internal control code
Product code
Joulwatt LOGO
YW
Lot number
Week code
Year code
Line2:
PIN CONFIGURATION
TOP VIEW
BST
1
6 SW
GND
2
5
FB
3
4 EN
VIN
TSOT23-6
ABSOLUTE MAXIMUM RATING1)
VIN, EN, SW Pin …................................................................................................................ -0.3V to 22V
BST Pin ...................................................................................................................... SW-0.3V to SW+5V
All other Pins ............................................................................................................................ -0.3V to 6V
Junction Temp. 2) 3) ............................................................................................................................150ºC
Lead Temperature .............................................................................................................................260ºC
JW5052S Rev.0.85
JoulWatt® Proprietary Information. Patent Protected.
2019/03/12
Unauthorized Photocopy and Duplication Prohibited.
2
JW5052S
JoulWatt
RECOMMENDED OPERATING CONDITIONS
Input Voltage VIN .................................................................................................................... 3.7V to18V
Output Voltage Vout ............................................................................................................0.6V to VIN-3V
THERMAL PERFORMANCE4)
Absolute Max
Storage Temp.
Recommended
Operating
Junction Temp. Range
Recommended
Max Case Temp.
TC (ºC)
Abs. Max Junction
Temp.
Tj (ºC)
Recommended Max
Power Loss
PD@25ºC (W)
-65ºC to 150ºC
-40ºC to 125ºC
119
150
0.9
RθJC
(ºC/W )
RθJA
(ºC/W )
RθJB
(ºC/W )
ψJT
(ºC/W )
ψJB
(ºC/W )
55
110
14.7
1.2
14.7
Note:
1)
2)
3)
4)
Exceeding these ratings may damage the device.
The JW5052S guarantees robust performance from -40°C to 150°C junction temperature. The junction temperature
range specification is assured by design, characterization and correlation with statistical process controls.
The JW5052S includes thermal protection that is intended to protect the device in overload conditions. Thermal
protection is active when junction temperature exceeds the maximum operating junction temperature. Continuous
operation over the specified absolute maximum operating junction temperature may damage the device.
Measured on JESD51-7, 4-layer PCB
JW5052S Rev.0.85
JoulWatt® Proprietary Information. Patent Protected.
2019/03/12
Unauthorized Photocopy and Duplication Prohibited.
3
JW5052S
JoulWatt
ELECTRICAL CHARACTERISTICS
VIN=12V, TA=25℃,Unless otherwise stated.
Item
Symbol
Conditions
VIN Under Voltage Lock-out Threshold
VIN_MIN
VIN Under voltage Lockout Hysteresis
VIN_MIN_HYST
Shutdown Supply Current
ISD
VEN=0V
Supply Current
IQ
VEN=5V, VFB=1.2V
VFB
3.7V
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