Datasheet

CIN
VIN
TPS62170
VIN
EN
GND
PGND
SW
VOS
PG
FB
COUT
2.2µH
R1
R2
R3
VOUT
TPS62170, TPS62171
TPS62172, TPS62173
www.ti.com SLVSAT8C –NOVEMBER 2011–REVISED SEPTEMBER 2013
PARAMETER MEASUREMENT INFORMATION
List of Components
REFERENCE DESCRIPTION MANUFACTURER
IC 17V, 1A Step-Down Converter, WSON TPS62170DSG, Texas Instruments
L1 2.2uH, 1.4A, 3 x 2.8 x 1.2 mm VLF3012ST-2R2M1R4, TDK
Cin 10µF, 25V, Ceramic Standard
Cout 22µF, 6.3V, Ceramic Standard
R1 depending on Vout
R2 depending on Vout
R3 100kΩ, Chip, 0603, 1/16W, 1% Standard
spacing
spacing
Figure 4. Measurement Setup
spacing
TYPICAL CHARACTERISTICS
Table of Graphs
DESCRIPTION FIGURE
Efficiency vs Output Current, vs Input Voltage 5 - 12
vs Output current (Load regulation) 13
Output voltage
vs Input Voltage (Line regulation) 14
vs Input Voltage 15
Switching Frequency
vs Output Current 16
Quiescent Current vs Input Voltage 17
Shutdown Current vs Input Voltage 18
Power FET RDS(on) vs Input Voltage (High-Side, Low-Side) 19, 20
Output Voltage Ripple vs output Current 21
Maximum Output Current vs Input Voltage 22
PWM-PSM-PWM Mode Transition 23, 24
Load Transient Response 25 - 28
Waveforms Startup 29, 30
Typical Power Save Mode Operation 31
Typical PWM Mode Operation 32
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Product Folder Links: TPS62170 TPS62171 TPS62172 TPS62173