TPS62400-Q1, TPS62402-Q1, TPS62404-Q1, TPS62405-Q1

SLVSA67E – FEBRUARY 2010 – REVISED JUNE 2015

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Electrical Characteristics (continued)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Voltage positioning active,

MODE/DATA = GND,

–1.5%

1%

2.5%

device operating in PFM mode,

(6) (7)

DC output voltage accuracy adjustable and

MODE/DATA = GND;

device operating in PWM mode,

–1%

0%

1%

(7)

Fixed PWM operation,

–1%

0%

1%

(8)

DC output voltage load regulation

PWM operation mode

0.5

%/A

(5)

Output voltage specification does not include tolerance of external voltage-programming resistors.

(6)

Configuration L1 or L2 typ. 2.2

depends on the effective capacitance of the output capacitor; larger output capacitors lead to tighter output voltage tolerance.

(7)

(8)

7.6 Timing Requirements

MIN

NOM

MAX

UNIT

INTERFACE TIMING

Start time

2

μs

High-time low bit, logic 0 detection

Signal level on MODE/DATA pin is > 1.2 V

2

200

μs

Low-time low bit, logic 0 detection

Signal level on MODE/DATA pin < 0.4 V

400

μs

Low-time high bit, logic 1 detection

Signal level on MODE/DATA pin < 0.4 V

2

200

μs

High-time high bit, logic 1 detection

Signal level on MODE/DATA pin is > 1.2 V

400

μs

End of stream

2

μs

Duration of acknowledge condition

(MODE/DATE line pulled low by the

400

520

μs

device)

Acknowledge valid time

2

μs

Time-out for entering power-save mode

MODE/DATA pin changes from high to low

520

μs

7.7 Switching Characteristics

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

OSCILLATOR

2.5 V

1.7

2.3

2.7

3.0 V

Oscillator frequency

2

2.3

2.7

MHz

3.6 V

2.06

2.2

2.49

OUTPUT

Start-up time

170

μs

Time to ramp from 5% to 95% of

750

μs

(1)

(2)

This time is valid if one converter turns from shutdown mode (EN2 = 0) to active mode (EN2 = 1) with the other converter already

enabled (for example, EN1 = 1). In case both converters are turned from shutdown mode (EN1 and EN2 = 0) to active mode (EN1

and/or EN2 = 1), a typical value of typ 80

8

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