AS3693B

austriami crosyst ems

www.austriamicrosystems.com

Revision 1.21 / 2011-09-30

6 - 32

5.3 Electrical Characteristics

Table 3 – Analog Electrical Characteristics

Symbol

Parameter

Min

Typ

Max

Unit

Note

Voltage at CURR1 to CURR16

50.0

V

TOL

Current Source Tolerance

-0.5

+0.5

%

Using 250mV reference

variation of external resistors

-1.5

+1.5

%

Using 250mV reference

-20°C to +100°C

variation of external resistors;

V(CURRx) <= 4.0V

-1.6

+1.6

%

Using DAC reference

VDAC =250mV ( Data = 0x80 )

variation of external resistors

DAC_INL

DAC INL

-4

+4

LSB DAC integral nonlinearity

Automatic Supply Regulation trip

point

0.5

1

V

See section ‘Feedback Circuit

(DCDC_Regulation_Trip_Point)’.

Automatic Supply Regulation

gain

2.0

mA/V

Voltage to current ratio; output

current range typ. 0 to 200uA

Over temperature Limit

130

140

150

°C

Maximum junction temperature

(2)

Thyst

Over temperature hysteresis

10

°C

CLK

Internal Clock for PWM

400

500

600

KHz Clock for internal PWM generation

Notes:

1, Accuracy at +100°C guaranteed by design and verified by laboratory characterization

2, If the temperature exceeds the over temperature limit, the PWM will be turned off. If the temperature

decreases, the PWM is activated again. The register settings are not reset.

Table 4 – Digital Input pins characteristics (SDI,VSYNC,HSYNC,SCL,CS)

Symbol

Parameter

Min

Typ

Max

Unit

Note

High Level Input voltage

1.3

VREG

V

Low Level Input voltage

-0.3

0.4

V

Maximum SCL Frequency

10

MHz

Maximum HSYNC Frequency

10

MHz

Output driver is slew rate limited

( Register: Curreg_Control 0x0D )

Vsync setup time before rising

edge of Hsync

15

ns

SYNC-mode:

PWM values are updated with first

rising edge of Hsync while Vsync = 1

( see 7.3.1.1 )

Vsync hold time after rising edge

of Hsync

15

ns

Setup time SDI,SCL

15

ns

SPI interface mode

Hold time SCL,SDI

15

ns

SPI interface mode

Setup time CS,SCL

15

ns

SPI interface mode