Internal-Switch Boost Regulator with Integrated
7-Channel Scan Driver, Op Amp, and LDO
MAX17117
4 ______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= +3V, Circuit of Figure 1, V
OPAS
= +8.5V, V
GHON
= +24V, V
VGL
= -6.2V, V
ST
= V
CK
_ = 0V, T
A
= 0NC to +85NC, unless otherwise
noted. Typical values are at T
A
= +25NC.)
ELECTRICAL CHARACTERISTICS
(V
IN
= +3V, Circuit of Figure 1, V
OPAS
= +8.5V, V
GHON
= +24V, V
VGL
= -6.2V, V
ST
= V
CK_
= 0V, T
A
= -40NC to +85NC, unless oth-
erwise noted.)
PARAMETER CONDITIONS MIN TYP MAX UNITS
GATE-SHADING TIMING CONTROL
Gate-Shading Detection
Threshold
DTS falling 100 150 mV
Gate-Shading Detection Current V
DTS
= 0.5V 5 10 15 µA
DTS Switch Resistance V
DTS
= 1.3V, I
DTS
= 1mA 10 50
I
DTS Rising Edge Threshold 1.215 1.240 1.265 V
DTS Falling Edge Threshold 100 150 mV
LDO
LDOO Output Voltage Range 1.8 V
IN
V
Dropout Voltage V
IN
= 3.3V, V
LDOADJ
= 1.1V, I
LDOO
= 350mA 300 500 mV
LDOO Line Regulation V
IN
= 2.8V to 5.5V, V
LDOO
= 2.5V, I
LDOO
= 100mA 0.1 0.3 %/V
LDOO Load Regulation V
LDOO
= 2.5V, I
LDOO
= 1mA to 300mA 0.2 0.5 %/V
LDOO Current Limit V
LDOADJ
= 1.0V 0.4 0.62 0.8 A
LDOADJ Feedback Voltage 1.227 1.240 1.252 V
LDOADJ Input-Bias Current
V
LDOADJ
= 1.3V, T
A
= +25NC
100 200 nA
DIGITAL INPUTS
ST, CK_ Input High Level 1.8V < V
LDOO
< 5.5V
0.7 x
V
LDOO
V
ST, CK_ Input Low Level 1.8V < V
LDOO
< 5.5V
0.3 x
V
LDOO
V
ENA Input Logic-High Level
1.8V < V
LDOO
< 3.0V
0.7 x
V
LDOO
V
V
LDOO
> 3.0V 2.1 V
ENA Input Logic-Low Level
1.8V < V
LDOO
< 3.0V
0.3 x
V
LDOO
V
V
LDOO
> 3.0V 0.8 V
ENA Resistor Range 0 200
kI
PARAMETER CONDITIONS MIN TYP MAX UNITS
IN Input Voltage Range 2.3 5.5 V
IN Undervoltage-Lockout
Threshold
V
IN
rising, typical hysteresis = 150mV 1.80 2.20 V
IN Quiescent Current
V
FB
= 1.3V, LX not switching 2.5
mA
V
FB
= 1.2V, LX switching 5
IN Standby Current V
ENA
= V
VGL
= 0V, V
IN
= 5.5V, V
GHON
= 4V 2 mA
GHON Standby Current V
ENA
= V
VGL
= 0V, V
IN
= 5.5V, V
GHON
= 4V 160
FA
OPAS Standby Current V
ENA
= V
VGL
= 0V, V
IN
= 5.5V, V
GHON
= 4V 50
FA
Thermal Shutdown Temperature rising 145
NC
(16 Seiten)
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