AS3729 datasheet(5/19 Pages) AMSCO

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ams Datasheet

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[v1-24] 2015-Aug-13

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AS3729 − Electrical Characteristics

Typical values are at VSUP = 3.8V, TA = 25°C (unless otherwise

specified). All limits are guaranteed. The parameters with Min

and Max values are guaranteed with production tests or SQC

(Statistical Quality Control) methods.

Figure 6:

Step Down DCDC Power Stage Parameters

Note(s) and/or Footnote(s):

1. Maximum value only for pulsed peak current.

2. MOS transistor only without package parasitics.

Symbol

Parameter

Comments

Min

Typ

Max

Units

VIN

Input voltage

Pin VSUPx

2.5

5.5

Pin CTRLx

5.5

Pin TEMP

3.6

ILIMIT

Peak coil current limit

Single phase

ILOAD

Load current

Continuous load current

2.5

Peak load current

3 (1)

RPMOS

P-switch On resistance (2)

Single phase

mΩ

RNMOS

N-switch On resistance (2)

Single phase

mΩ

fSW

Switching frequency

Supplied by DCDC

controller

2.7

MHz

IQ_force_PWM

Quiescent current PWM

TEMP pin high, force

PWM mode active

6.2

IQ_low_power

Quiescent current LP

TEMP pin high, low

power mode active

μA

Ipower_off

Power-Off current

No current into pin TEMP

±1

μA

Rdischarge

active discharge

Single phase

Electrical Characteristics

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