Datasheet

TPS62065, TPS62067
SLVS833B –MARCH 2010–REVISED NOVEMBER 2013 www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Over full operating ambient temperature range, typical values are at T
A
= 25°C. Unless otherwise noted, specifications apply
for condition V
IN
= EN = 3.6V. External components C
IN
= 10μF 0603, C
OUT
= 10μF 0603, L = 1.0μH, see the parameter
measurement information.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
ref
Reference voltage 600 mV
PWM operation, MODE = V
IN
,
V
FB(PWM)
Feedback voltage PWM Mode –1.5 0 1.5
2.9 V ≤ V
IN
≤ 6 V, 0 mA load
%
Feedback voltage PFM mode, device in PFM mode, voltage positioning active
(2)
V
FB(PFM)
1
Voltage Positioning
Load regulation -0.5 %/A
V
FB
Line regulation 0 %/V
Activated with EN = GND, 2.9V ≤ V
IN
≤ 6V, 0.8 ≤ 75 200 1450
R
(Discharge)
Internal discharge resistor Ω
V
OUT
≤ 3.6V
t
START
Start-up time Time from active EN to reach 95% of V
OUT
500 μs
(2) In PFM mode, the internal reference voltage is set to typ. 1.01×V
ref
. See the parameter measurement information.
PIN ASSIGNMENTS
TERMINAL FUNCTIONS
TERMINAL
I/O DESCRIPTION
NO.
NAME
SON 2x2-8
PGND 1 PWR GND supply pin for the output stage.
This is the switch pin and is connected to the internal MOSFET switches. Connect the
SW 2 OUT
external inductor between this terminal and the output capacitor.
AGND 3 IN Analog GND supply pin for the control circuit.
Feedback pin for the internal regulation loop. Connect the external resistor divider to this pin.
FB 4 IN
In case of fixed output voltage option, connect this pin directly to the output capacitor
This is the enable pin of the device. Pulling this pin to low forces the device into shutdown
EN 5 IN
mode. Pulling this pin to high enables the device. This pin must be terminated
MODE: MODE pin = high forces the device to operate in fixed frequency PWM mode. MODE
MODE IN pin = low enables the Power Save Mode with automatic transition from PFM mode to fixed
frequency PWM mode. This pin must be terminated.
6
Open PG: Power Good Open Drain output. Connect an external pull up resistor to a rail which is
PG
Drain below or equal AV
IN
.
Analog V
IN
power supply for the control circuit. Need to be connected to PVIN and input
AV
IN
7 IN
capacitor.
PV
IN
8 PWR V
IN
power supply pin for the output stage.
For good thermal performance, this PAD must be soldered to the land pattern on the pcb.
Power PAD
This PAD should be used as device GND.
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