Contax SW II - REV 4.01 Uživatelský manuál stáhnout pdf (Strana 7)

R2J20702NP Target Specification

REJ03G1782-0401 Rev.4.01 Page 7 of 27

Jun 17, 2010

Electrical Characteristics

(Ta = 25°C, VIN = VCIN = 12 V, unless otherwise specified)

Item Symbol Min Typ Max Unit Test Conditions

VIN start threshold VH 6.8 7.2 7.6 V

VIN shutdown threshold VL 6.45 6.85 7.25 V

UVLO hysteresis dUVL — 0.35 *

— V

Input bias current Iin 20 50 80 mA

CT = 68 pF,

Duty cycle = 50%

Supply

Input shutdown current Isd 1.3 2.3 3.3 mA On/off = 0 V

Output voltage Vreg 4.8 5.0 5.2 V

Line regulation Vreg-line –5 0 +5 mV VIN = 10 to 16 V

5-V

regulator

Load regulation Vreg-load –8 –3 +2 mV Ireg = 0 to 10 mA

5.25-V

regulator

Output voltage Vdrv 5.04 5.25 5.46 V

Disable threshold Voff 1.0 1.3 1.6 V

Enable threshold Von 2.0 2.5 3.0 V

Remote

On/off

Input current Ion/off 0.5 2.0 5.0 A Von/off = 1 V

Reference

current

generator

IREF pin voltage VIref 2.6 2.7 2.8 V Riref = 27 k

CT oscillating frequency Fct — 930 *

— kHz CT = 68 pF

SW switching frequency Fsw 418 465 512 kHz CT = 68 pF

CT higher trip voltage Vhct — 3 *

— V CT = 68 pF

CT lower trip voltage Vlct — 2 *

— V CT = 68 pF

CT source current Ict-src –176 –160 –144 A CT = 1.5 V

CT sink current Ict-snk 144 160 176 A CT = 3.5 V

CT threshold for two-

phase operation

Vct-two 3.6 4.0 4.4 V

Oscillator

CT threshold for

synchronous operation

Vct-one 0.8 1.0 1.2 V

SYNC frequency Fsync 418 465 512 kHz CT = 68 pF

SYNC high voltage Vh-sync 4.0 5.0 — V Rsync = 51 k to GND

SYNC low voltage Vl-sync 0 — 1.0 V Rsync = 51 k to REG5

SYNC and

pulse

generator

SYNC input threshold Vsync 1.0 2.0 3.0 V CT = 0 V or 5 V

Feedback voltage Vfb 594 600 606 mV TRK-SS = 1 V

Input bias current Ifb –0.1 0 +0.1 A FB = 0.6 V

Output source current Io-src 150 200 250 A EO = 4 V, FB = 0 V

Output sink transient

current

Io-snk 5.0 10.6 19.0 mA EO = 1 V, FB = 1 V

Voltage gain Av — 80 *

— dB

Band width BW — 15 *

— MHz

Error

amplifier

Resistance connected to

the Ishare pin

Rshare 70 100 130 k EO = 0 V. Ishare = 1 V

Note: 1. These are reference values for design and have not been 100% tested in production.

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