U3525-S16-R datasheet(5/9 Pages) UTC

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U3525

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

5 of 9

www.unisonic.com.tw

QW-R103-032,A

ELECTRICAL CHARACTERISTICS(Cont.)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP MAX UNIT

ERROR AMPLIFIER SECTION (VCM = 5.1 V)

Output Low Level

0.2

0.5

Output High Level

3.8

5.6

Input Offset Voltage

VOS

Input Bias Current

µA

Input Offset Current

Ios

µA

Comm. Mode Reject.

CMR

VCM = 1.5 ~ 5.2 V

Supply Voltage Rejection

PSR

VIN = 8 ~ 35 V

DC Open Loop Gain

RL ≥10 MΩ

DC Transconduct. (Note 1, 3)

30 KΩ ≤RL≤1 MΩ, TJ = 25℃

1.1

1.5

Gain Bandwidth Product (Note 1)

Gv = 0 dB, TJ = 25℃

MHz

PWM COMPARATOR

Zero Duty-cycle

0.7

0.9

Input Threshold (Note 2)

Maximum Duty-cycle

3.3

3.6

Input Bias Current (Note 1)

0.05

µA

Minimum Duty-cycle

Maximum Duty-cycle (Note 2)

SHUTDOWN SECTION

Soft Start Low Level

VSD = 2.5 V

0.4

0.7

Shutdown Threshold

To outputs, VSS = 5.1 V, TJ = 25℃

0.6

0.8

Shutdown Input Current

VSD = 2.5 V

0.4

Soft Start Current

VSD = 0 V, VSS = 0 V

µA

Shutdown Delay (Note 1)

VSD = 2.5 V, TJ = 25℃

0.2

0.5

µs

OUTPUT DRIVERS (each output) (VC = 20 V)

ISINK = 20 mA

0.2

0.4

Output Low Level

ISINK = 100 mA

ISOURCE = 20 mA

Output High Level

ISOURCE = 100 mA

Under-Voltage Lockout

VCOMP and VSS = High

Collector Leakage

VC = 35 V

200

µA

Rise Time (Note 1)

CL = 1 nF, TJ = 25 °C

100

600

Fall Time (Note 1)

CL = 1 nF, TJ = 25 °C

300

TOTAL STANDBY CURRENT

Supply Current

VIN = 35 V

Note:1.The parameters are not 100% tested in production.

2.Tested at fosc=40 KHz (RT=3.6 KΩ, CT=10nF, RD=0 Ω). Approximate oscillator frequency is defined by :

f =

CT(0.7RT + 3RD)

3.DC transconductance (gM) relates to DC open-loop voltage gain (GV) according to the following equation:

GV=gM RL where RL is the resistance from pin 9 to ground. The minimum gM specification is used to calculate

minimum GV when the error amplifier output is loaded.

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