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4

BL8591

Istandby

Supply Current

(Srandby)

Vin=Set Vout+1V

Vce=GND

0.1

1.0

uA

Vout

T

Vout

⋅

∆

∆

Output Voltage

Temperature

Coefficiency

Iout=30mA

±100

ppm/

°C

PSRR

Ripple Rejection

F=100Hz,

Ripple=0.5Vp-p

Vin=Set Vout+1V

65

dB

Ilim

Short Current Limit

Vout=0V

200

mA

Rpd

CE Pull down

Resistance

2.0

5.0

10.0

M

Ω

Vceh

CE Input Voltage “H”

1.5

Vin

V

Vcel

CE Input Voltage “L”

0

0.25

V

NOTE1:

Vdrop=Vin1-(Vout2*0.98) Vout2 is the output voltage when Vin=Vout1+1.0V and Iout=100mA.

Vin1 is the input voltage at which the output voltage becomes 98% of Vout1 after gradually decreasing the input voltage.

BLOCK DIAGRAM

Explanation

BL8591 series is a group of positive voltage output, low noise, low power consumption, low

dropout voltage regulator.

BL8591 can provide output value in the range of 1.2V~4.5V every 0.1V step. It also can be

customized on command.

BL8591 includes high accuracy voltage reference, error amplifier, current limit circuit and output

driver module.

BL8591 has excellent load and line transient response and good temperature characteristics,

which can assure the stability of chip and power system. And it uses trimming technique to

guarantee output voltage accuracy within±2%.