AS3688 datasheet(12/72 Pages) AMSOSRAM

12 / 72 page

AS3688

austriami crosyst ems

Datasheet, Confidential

www.austriamicrosystems.com (ptr,tje)

Revision 1.1.1 / 20060707

10 - 70

Symbol

Parameter

Min

Typ

Max

Unit

Note

300

450

(7)

520

(7)

Pin VANA1. LDO acts as current

source if the output current

exceeds

ILIMIT. (6)

LDO Current Limit

ldo_ana1_lpo

= 0

300

450

(7)

520

(7)

Pin VANA2

ILIMIT

(8)

LDO Current Limit

ldo_ana1_lpo

= 1

VBAT3-VANA>=0.2V

-10

Static (4)

VLoadReg_L

Load Regulation

ldo_ana1_lpo

= 1

-50

Transient; Slope: tr = 10µs (5)

Notes:

The Line Regulation in Table 3 is valid for whole output voltage (1.8 to 3.3V), if (VBAT-VANA1,2) >200mV.

The static Load Regulation in Table 3 is valid for whole output voltage (1.8 to 3.3V) and current range (0

to 100mA), if (VBAT-VANA1,2) >200mV.

The load condition for this value is a 1 to 100mA and 100 to 1mA steps.

The static load regulation in Table 3 is valid for the whole output voltage range (1.8 to 3.3V) and current

range (0 to 5mA), if (VBAT-VANA1,2) >500mV.

The load condition for this value is a 0.05 to 5mA and 5 to 0.05mA steps.

The duration of operation in current limit is only dependent on the total power dissipation of the device.

If this limit exceeded, the overtemperature detection might disable the device temporarily.

During startup of the LDO the current limit is half the value of ILIMIT

Not production tested – guaranteed by design and laboratory verification

7.1.1 LDO Registers

Table

4 – Register definition for Analog LDO

Reg. Control

Addr: 00

This register enables/disables the LDOs, Charge Pumps, Charge Pump

LEDs, current sinks, the Step Up DC/DC Converter, and low-power mode.

Bit

Bit Name

Default

Access

Description

ldo_ana1_on

R/W

0 = Analog LDO is switched off

1 = Analog LDO is switched on

ldo_ana2_on

R/W

0 = Analog LDO is switched off

1 = Analog LDO is switched on

ldo_ana1_lpo

R/W

0 = Normal Operation

1 = Low-power mode; (ldo_ana1 only),current

consumption is reduced by about 75µA. Reduced

performance of LDO: max 5mA load, internal oscillator is

switched off. The device will exit low-power mode

automatically, if blocks requiring the oscillator are

enabled.

AS3688 Datasheet(PDF) 12 Page - ams-OSRAM AG

AS3688 Datasheet(HTML) 12 Page - ams-OSRAM AG

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72

Datasheet Download

Link URL