TLV62568_17 Datasheet, PDF (1/26 Pages) Texas Instruments – 1-A High Efficiency Synchronous Buck Converter in SOT Package

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TLV62568, TLV62568P
SLVSD89A – NOVEMBER 2016 – REVISED APRIL 2017
TLV62568 1-A High Efficiency Synchronous Buck Converter in SOT Package
1 Features
•1 Up to 95% Efficiency
• Low R_DS(ON) Switches 150 mΩ / 100 mΩ
• 2.5-V to 5.5-V Input Voltage Range
• Adjustable Output Voltage from 0.6 V to V_IN
• Power Save Mode for Light Load Efficiency
• 100% Duty Cycle for Lowest Dropout
• 35-µA Operating Quiescent Current
• 1.5-MHz Switching Frequency
• Power Good Output
• Over Current Protection
• Internal Soft Startup
• Thermal Shutdown Protection
• Available in SOT Package
• Pin-to-Pin Compatible with TLV62569
2 Applications
• General Purpose POL Supply
• Network Video Camera
• Set Top Box
• Wireless Router
3 Description
The TLV62568 device is a synchronous step-down
buck DC-DC converter optimized for high efficiency
and compact solution size. The device integrates
switches capable of delivering an output current up to
1 A.
Simplified Schematic
VIN
2.5 V to 5.5 V
R3
499 k
VPG
C1
4.7 µF
TLV62568P
VIN
SW
L1
2.2 µH
EN
PG GND FB
VOUT
1.8 V / 1.0 A
C2
C3*
10 µF R1
200 k
C3: Optional
R2
100 k
Copyright Ú 2016, Texas Instruments Incorporated
At medium to heavy loads, the device operates in
pulse width modulation (PWM) mode with 1.5-MHz
switching frequency. At light load, the device
automatically enters Power Save Mode (PSM) to
maintain high efficiency over the entire load current
range. In shutdown, the current consumption is
reduced to less than 2 μA.
The TLV62568 provides an adjustable output voltage
via an external resistor divider. An internal soft start
circuit limits the inrush current during startup. Other
features like over current protection, thermal
shutdown protection and power good are built-in. The
device is available in a SOT23 and SOT563 package.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TLV62568
TLV62568P
SOT-23 (5)
SOT-23 (6)
2.90 mm × 2.80 mm
TLV62568
TLV62568P
SOT563 (6)
SOT563 (6)
1.60 mm x 1.60 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Device Comparison
PART NUMBER
FUNCTION
PACKAGE
MARKING
TLV62568DBV
-
TLV62568PDDC⁽¹⁾ Power Good
14VF
TLV62568DRL
-
18L
TLV62568PDRL Power Good
18N
PACKAGE
SOT23-5
SOT23-6
SOT563-6
SOT563-6
(1) Product preview
Efficiency at 5-V Input Voltage
100
95
90
85
80
75
70
V_OUT = 1.2 V
V_OUT = 1.8 V
65
V_OUT = 2.5 V
V_OUT = 3.3 V
60
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
Load (A)
D008
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. UNLESS OTHERWISE NOTED, this document contains PRODUCTION
DATA.