ZL2004

FN6846 Rev. 3.00

Page 4 of 42

February 15, 2011

Table 3. Electrical Specifications

the operating temperature range, -40°C to +85°C.

Parameter

Conditions

Typ

Unit

Input and Supply Characteristics

GH no load, GL no load,

MISC_CONFIG[7] = 1

–

–

16

25

30

50

mA

mA

–

6.5

8

mA

VR reference output voltage

4.5

5.2

5.7

V

V25 reference output voltage

2.25

2.5

2.75

V

Output Characteristics

0.6

–

3.6

V

Output voltage set-point resolution

Set using resistors

–

10

–

mV

–

±0.025

–

Includes line, load, temp

- 1

–

1

%

VSEN input bias current

VSEN = 4 V

–

80

150

µA

Current sense differential input

- 50

–

50

mV

Current sense input bias current

ISENA

- 1

–

1

µA

ISENB

- 100

–

100

µA

Soft start delay duration range

Set using SS pin or resistor

2

–

20

ms

0.002

–

500

s

Soft start delay duration accuracy

–

–

–

±0.25

-0.25/+4

-0.25/+4

–

–

–

ms

ms

ms

Soft start ramp duration range

Set using SS pin or resistor

2

–

20

ms

0

–

200

ms

Soft start ramp duration accuracy

–

100

–

µs

Logic Input/Output Characteristics

Logic input bias current

EN,PG,SCL,SDA,SALRT pins

- 10

–

10

µA

MGN input bias current

- 1

–

1

mA

–

–

0.8

V

Logic input OPEN (N/C)

Multi-mode logic pins

–

1.4

–

V

2.0

–

–

V

–

–

0.4

V

2.25

–

–

V

Notes:

1. Set point adjustment range does not include margin limits.

2. Percentage of Full Scale (FS) with temperature compensation applied.

4. The device requires approximately 2 ms following an enable signal and prior to ramping its output. The delay accuracy will vary by

±0.25 ms around the 2 ms minimum delay value.

5. Precise ramp timing mode is only valid when using EN pin to enable the device rather than PMBus enable.

6. The devices may require up to a 4 ms delay following an assertion of the enable signal (normal mode) or following the de-assertion

of the enable signal.