ADFS5758 datasheet(7/75 Pages) AD

7 / 75 page

Data Sheet

ADFS5758

Rev. 0 | Page 7 of 75

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

REFERENCE INPUT/OUTPUT

Reference Input

Reference Input Voltage4

2.5

For specified performance

DC Input Impedance

120

MΩ

Reference Output

Output Voltage

2.495

2.5

2.505

TA = 25°C (including drift after 1000 hours at

TJ = 135°C)

Reference TC3

−10

+10

ppm/°C

Output Noise (0.1 Hz to

10 Hz)3

µV p-p

Noise Spectral Density3

nV/√Hz

At 10 kHz

Capacitive Load3

1000

Load Current

Short-Circuit Current

Line Regulation

ppm/V

Load Regulation

ppm/mA

Thermal Hysteresis3

150

ppm

VLDO OUTPUT

Output Voltage

3.3

Output Voltage TC3

ppm/°C

Output Voltage Accuracy

−2

Externally Available Current

Short-Circuit Current

Load Regulation

0.8

mV/mA

Capacitive Load

0.1

µF

Recommended operation

DC-TO-DC

Start-Up Time

1.25

Switch

Peak Current Limit3

150

400

User programmable in 50 mA steps via the

DCDC_CONFIG2 register

Oscillator

Oscillator Frequency (fSW)

500

kHz

Minimum Duty Cycle

Current Output DPC Mode

Current output dynamic power control mode

VDPC+ Voltage Range

4.95

Assuming sufficient supply margin between

AVDD1 and VDPC+; see the Power Dissipation

Control section for further details; maximum

operating range of |VDPC+ to AVSS| = 50 V

VDPC+ Headroom

2.3

2.5

Typical voltage headroom between VIOUT and

VDPC+; only applicable when dc-to-dc converter

is in regulation (that is, load is sufficiently high)

Current Output PPC Mode

PPC mode

VDPC+ Voltage Range

25.677

Assuming sufficient supply margin between

AVDD1 and VDPC+; see the Power Dissipation

Control section for further details; maximum

operating range of |VDPC+ to AVSS| = 50 V

VDPC+ Voltage Accuracy

−500

+500

Only applicable when dc-to-dc is operating in

regulation (that is, load is sufficiently high)

Voltage Output DPC Mode

Voltage output dynamic power control mode

VDPC+ Voltage Range

5 V = −VSENSE(MIN) + 15 V; 25 V = −VSENSE(MAX) + 15 V;

assuming sufficient supply margin between AVDD1

and VDPC+; see the Power Dissipation Control

section for further details; maximum operating

range of |VDPC+ to AVSS| = 50 V

VDPC+ Voltage Accuracy

−500

+500

Only applicable when dc-to-dc is operating in

regulation (that is, load sufficiently high)

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