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ADP1055

Digital Controller for Power Supply Applications with PMBus Interface

Analog Devices 

ADP1055

Data Sheet

Parameter

Measurement Accuracy for

External Temperature Sensor

Forward Temperature Sensor

Reverse Temperature Sensor

CTRL, SMBALRT, SYNC, GPIO1 TO

GPIO4, ISHARE PINS

Input Low Voltage

Input High Voltage

Propagation Delay

GPIOx Rise Time

GPIOx Fall Time

Leakage Current

SYNC PIN

Minimum On Pulse

Synchronization Range2

Leakage Current

BLACK BOX PROGRAMMING TIME

SDA/SCL PINS

Input Low Voltage

Input High Voltage

Output Low Voltage

Leakage Current

SERIAL BUS TIMING

Clock Operating Frequency

Bus Free Time

Start Hold Time

Start Setup Time

Stop Setup Time

SDA Setup Time

SDA Hold Time

SCL Low Timeout

SCL Low Period

SCL High Period

Clock Low Extend Time

SCL, SDA Fall Time

SCL, SDA Rise Time

EEPROM RELIABILITY

Endurance3

Data Retention4

Symbol

Test Conditions/Comments

With BC847A transistor (nf = 1.00);

Register 0xFE5A[2:0] = 0x04

Error from −40°C to +25°C

Error from 25°C to 125°C

Error from 25°C to 125°C

Digital inputs/outputs

VIL

VIH

GPIOx configured as an output

GPIOx configured as an output

SMBALRT, SYNC, GPIO1 TO GPIO4, and

ISHARE pins

CTRL pin

Synchronization to external frequency

VIL

VIH

VOL

See Figure 3

tBUF

tHD;STA

tSU;STA

tSU;STO

tSU;DAT

tHD;DAT

tTIMEOUT

tLOW

tHIGH

tLO;SEXT

tF

tR

Between stop and start conditions

Hold time after (repeated) start condition;

after this period, the first clock is generated

Repeated start condition setup time

For write and for readback

TJ = 85°C

TJ = 125°C

TJ = 85°C

TJ = 125°C

Min

Typ

−11.7

−8.9

−9.7

VDD − 0.8

40

3.5

1.5

50

40

−10.0

1.2

2.1

10

100

1.3

0.6

0.6

0.6

100

300

25

1.3

0.6

20

20

10,000

1000

20

15

Max

Unit

+13.4

°C

+14.7

°C

+14.4

°C

0.8

V

V

ns

ns

ns

1.0

μA

10.0

1000

+10.0

1.0

36 × 1.2

μA

kHz

ns

% fSW

μA

ms

0.8

V

V

0.4

V

1.0

μA

400

kHz

μs

μs

μs

μs

ns

ns

35

ms

μs

μs

25

ms

300

ns

300

ns

Cycles

Cycles

Years

Years

1 Differential voltage from CS2+ to CS2−.

2 fSW is the switching frequency set in Register 0x33.

3 Endurance is qualified as per JEDEC Standard 22, Method A117, and is measured at −40°C, +25°C, +85°C, and +125°C.

4 Retention lifetime equivalent at junction temperature (TJ) = 85°C as per JEDEC Standard 22, Method A117. Retention lifetime derates with junction temperature.

Rev. A | Page 8 of 140

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