Datasheet

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TPS62410
SLVS737 – FEBRUARY 2007
ELECTRICAL CHARACTERISTICS (continued)
V
IN
= 3.6V, V
OUT
= 1.8V, EN = V
IN
, MODE = GND, L = 2.2 µ H, C
OUT
= 20 µ F, T
A
= –40 ° C to 85 ° C typical values are at T
A
=
25 ° C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
POWER SWITCH
R
DS(ON)
P-Channel MOSFET On-resistance, V
IN
= V
GS
= 3.6V 280 620 m Ω
Converter 1,2
I
LK_PMOS
P-Channel leakage current V
DS
= 6.0V 1 µ A
R
DS(ON)
N-Channel MOSFET On-resistance V
IN
= V
GS
= 3.6V 200 450 m Ω
Converter 1,2
I
LK_SW1/SW2
Leakage Current into SW1/SW2 Pin Includes N-Chanel leakage currnet, 6 7.5 µ A
V
IN
= open, V
SW
= 6.0V, EN = GND
(4)
I
LIMF
Forward Current OUT 1/2 800mA 2.5V ≤ V
IN
≤ 6.0V 1.0 1.2 1.38 A
Limit PMOS and
NMOS
T
SD
Thermal shutdown Increasing junction temperature 150 ° C
Thermal shudown hysteresis Decreasing junction temperature 20 ° C
OSCILLATOR
fSW Oscillator frequency 2.5V ≤ VIN ≤ 6.0V 2.0 2.25 2.5 MHz
OUTPUT
V
OUT
Adjustable output votage range 0.6 V
IN
V
V
ref
Reference voltage 600 mV
Voltage positioning active, MODE/DATA = GND,
1.01x
V
OUT (PFM)
device operating in PFM mode, VIN = 2.5V to –1.5% 2.5%
V
OUT
5.0V
(6) (7)
DC output voltage accuracy PFM
mode, adjustable and fixed output MODE/DATA = GND; device operating in PWM
–1% 0% 1%
voltage
(5)
Mode VIN = 2.5V to 6.0V
(7)
V
OUT
V
IN
= 2.5V to 6.0V, Mode/Data = V
IN
, Fixed PWM
–1% 0% 1%
operation, 0mA < I
OUT
< I
OUTMAX
(8)
DC output voltage load regulation PWM operation mode 0.5 %/A
t
Start up
Start-up time Activation time to start switching
(9)
170 µ s
t
Ramp
V
OUT
Ramp UP time Time to ramp from 5% to 95% of V
OUT
750 µ s
(4) At pins SW1 and SW2 an internal resistor of 1M Ω is connected to GND
(5) Output voltage specification does not include tolerance of external voltage programming resistors
(6) Configuration L typ 2.2 µ H, C
OUT
typ 20 µ F, see parameter measurement information, the output voltage ripple depends on the effective
capacitance of the output capacitor, larger output capacitors lead to tighter output voltage tolerance
(7) In Power Save Mode, PWM operation is typically entered at I
PSM
= V
IN
/32 Ω .
(8) For V
OUT
> 2.2V, V
IN
min = V
OUT
+0.3V
(9) This time is valid if one converter turns from shutdown mode (EN2 = 0) to active mode (EN2 =1) AND the other converter is already
enabled (e.g., EN1 = 1). In case both converters are turned from shutdown mode (EN1 and EN2 = low) to active mode (EN1 and/or
EN2=1) a value of typ 80 µ s for ramp up of internal circuits needs to be added. After t
Start
the converter starts switching and ramps
V
OUT
.
4
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