Datasheet

COUT
VOUT
CIN
L1
VIN
FB
PG
TPS62140
R1
R2
CSS
R3
VIN
AVIN
EN
SS/TR
DEF
FSW
SW
VOS
PG
FB
AGND
PGND
TPS62140, TPS62140A
TPS62141, TPS62142, TPS62143
www.ti.com SLVSAJ0B –NOVEMBER 2011–REVISED JUNE 2013
PARAMETER MEASUREMENT INFORMATION
List of Components
REFERENCE DESCRIPTION MANUFACTURER
IC 17-V, 2-A step-down converter, QFN TPS62140RGT, Texas Instruments
L1 2.2-µH, 3.1-A, 0.165 in × 0.165 in XFL4020-222MEB, Coilcraft
Cin 10-µF, 25-V, ceramic Standard
Cout 22-µF, 6.3-V, ceramic Standard
Cs 3300-pF, 25-V, ceramic
R1 Dependent on Vout
R2 Dependent on Vout
R3 100-kΩ, chip, 0603, 1/16W, 1% Standard
Figure 4. Measurement Setup
TYPICAL CHARACTERISTICS
Table of Graphs
DESCRIPTION FIGURE
Efficiency vs Output Current, vs Input Voltage 5–16
vs Output current (Load regulation), vs Input Voltage
Output voltage 17, 18
(Line regulation)
vs Input Voltage 19
Switching Frequency
vs Output Current 20
Quiescent Current vs Input Voltage 21
Shutdown Current vs Input Voltage 22
Power FET RDS(on) vs Input Voltage (High-Side, Low-Side) 23, 24
Output Voltage Ripple vs output Current 25
Maximum Output Current vs Input Voltage 26
Power Supply Rejection Ratio (PSSR) vs Frequency 27, 28
PWM-PSM-PWM Mode Transition 29
Load Transient Response 30–32
Waveforms Start-Up 33, 34
Typical PWM Mode Operation 35
Typical Power Save Mode Operation 36
vs Load Current 37
Maximum Ambient Temperature
vs Power Dissipation 38
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Product Folder Links: TPS62140 TPS62140A TPS62141 TPS62142 TPS62143