Rainbow Electronics MAX17117 - Manual (Page 5)

Internal-Switch Boost Regulator with Integrated
7-Channel Scan Driver, Op Amp, and LDO
MAX17117
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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 = -40NC to +85NC, unless oth-
erwise noted.)
PARAMETER CONDITIONS MIN TYP MAX UNITS
STEP-UP REGULATOR
Output Voltage Range
V IN 15 V
OPAS Overvoltage Threshold OPAS rising 16.5 18 V
Operating Frequency 1000 1400 kHz
Oscillator Maximum Duty Cycle 91 97 %
FB Regulation Voltage No load 1.227 1.252 V
FB Fault-Trip Level Falling edge 1.05 1.15 V
FB Line Regulation V IN = 2.5V to 5.5V, T A = +25NC 0.3 %/V
FB Input-Bias Current V FB = 1.3V, T A = +25NC 200 nA
FB Transconductance
D
I
COMP
= Q2.5FA, FB = COMP 75 280
F
S
LX Current Limit V FB = 1.2V, duty cycle = 60% 1.6 2.4 A
LX On-Resistance I LX = 1A 500 mI
LX Input-Bias Current V LX = 13.5V, T A = +25NC 20 F A
Current-Sense Transresistance 0.10 0.30 V/A
Soft-Start Pullup Current 2 6
F
A
VCOM BUFFER
OPAS Voltage Range
5 15 V
OPAS Supply Current V POS = V OPAS /2, no load 1.2 mA
OUT Voltage Swing High I OUT = 5mA
V OPAS
- 100
mV
OUT Voltage Swing Low I OUT = 5mA 100 mV
OUT Short-Circuit Current
Sourcing, short to V OPAS /2 - 1V 100
mA
Sinking, short to V OPAS /2 + 1V 100
POS Input-Bias Current V POS = V OPAS /2, T A = +25NC -50 +50 nA
POS Input-Offset Voltage V OUT = V OPAS /2 -15 +15 mV
Slew Rate
5V pulse applied to POS, OUT measured from 10% to
90%
10 V/Fs
HIGH-VOLTAGE SCAN DRIVER
GHON Voltage Range
12 35 V
VGL Voltage Range -15 -3 V
GHON-to-VGL Voltage Range V GHON - V VGL 40 V
GHON Supply Current CK1 through CK6 and ST low 550
F A
VGL Supply Current CK1 through CK6 and ST low -500 F A
Output Impedance Low STH, CKH_, VGLC, I OUT = -20mA 80 I
Output Impedance High STH, CKH_, VGLC, I OUT = +20mA 80 I
Gate-Shading Switch Resistance
CKH1, CKH3, CKH5, I RE = 10mA 100
I
CKH2, CKH4, CKH6, I RO = 10mA 100
RO, RE Resistance Range 100 I
Propagation Delay from ST
Rising Edge to STH Rising Edge
C LOAD = 100pF, R LOAD = 0I 200 ns