Rainbow-electronics MAX17117 Manual do Utilizador descarregar pdf (Página 6)

Internal-Switch Boost Regulator with Integrated

7-Channel Scan Driver, Op Amp, and LDO

MAX17117

6 ______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

= +3V, Circuit of Figure 1, V

OPAS

= +8.5V, V

GHON

= +24V, V

VGL

= -6.2V, V

= V

CK_

= 0V, T

= -40NC to +85NC, unless oth-

erwise noted.)

PARAMETER CONDITIONS MIN TYP MAX UNITS

Propagation Delay from ST

Falling Edge to STH Falling Edge

LOAD

= 100pF, R

LOAD

= 0I

200 ns

Propagation Delay from CK_

Rising Edge to CKH_ Rising Edge

LOAD

= 100pF, R

LOAD

= 0I

200 ns

Propagation Delay from CK_

Falling Edge to CKH_ Falling

Edge

LOAD

= 100pF, R

LOAD

= 0I

200 ns

STH, VGLC, CKH_ Rise Time

LOAD

= 5nF, R

LOAD

= 0I; V

GHON

= 30V,

VGL

= -10V; measured from 10% to 90%

STH, VGLC, CKH_ Fall Time

LOAD

= 5nF, R

LOAD

= 0I; V

GHON

= 30V,

VGL

= -10V; measured from 10% to 90%

STH, CKH_ Operating Frequency

Range

LOAD

= 5nF, R

LOAD

= 0I

100 kHz

GATE-SHADING TIMING CONTROL

Gate-Shutdown Detection

Threshold

DTS falling 100 150 mV

Gate-Shutdown Detection Current V

DTS

= 0.5V 5 10 15 µA

DTS Switch Resistance V

DTS

= 1.3V, I

DTS

= 1mA 50

DTS Rising Edge Threshold 1.210 1.265 V

DTS Falling Edge Threshold 150 mV

LDO

LDOO Output Voltage Range 1.8 V

Dropout Voltage V

= 3.3V, V

LDOADJ

= 1.1V, I

LDOO

= 350mA 500 mV

LDOO Line Regulation V

= 2.8V to 5.5V, V

LDOO

= 2.5V, I

LDOO

= 100mA 0.3

%/V

LDOO Load Regulation V

LDOO

= 2.5V, I

LDOO

= 1mA to 300mA 0.5

%/V

LDOO Current Limit V

LDOADJ

= 1.0V 0.4 0.8 A

LDOADJ Feedback Voltage 1.227 1.252 V

LDOADJ Input-Bias Current

LDOADJ

= 1.3V, T

= +25NC

200 nA

DIGITAL INPUTS

ST, CK_ Input High Level 1.8V < V

LDOO

< 5.5V

0.7 x

LDOO

ST, CK_ Input Low Level 1.8V < V

LDOO

< 5.5V

0.3 x

LDOO

ENA Input Logic-High Level

1.8V < V

LDOO

< 3.0V

0.7 x

LDOO

> 3.0V 2.1

ENA Input Logic-Low Level

1.8V < V

LDOO

< 3.0V

0.3 x

LDOO

> 3.0V 0.8

ENA Resistor Range 0 200

1 2 3 4 5 6 7 8 9 10 11 ... 21 22

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