Datasheet

MAX17094
Internal-Switch Boost Regulator with Integrated
7-Channel Driver, VCOM Calibrator, Op Amp, and LDO
_______________________________________________________________________________________ 3
PARAMETER CONDITIONS MIN TYP MAX UNITS
STEP-UP DC-DC CONVERTER
R
FREQ
= 80k 1000 1200 1500
R
FREQ
= 30k 382 450 518
Switching Frequency f (MHz) = 0.015 x R
FREQ
(k)
R
FREQ
= unconnected 570 600 690
kHz
Oscillator Maximum Duty Cycle 88 92 96 %
FB Regulation Voltage 1.216 1.235 1.254 V
FB Load Regulation 0 < I
MAIN
< 200mA, transient only -1 %
FB Line Regulation V
IN
= 1.8V to 5.5V -0.15 -0.08 +0.15 %/V
FB Input Bias Current V
FB
= 1.3V 25 75 150 nA
FB Transconductance I = 5μA at COMP 75 160 280 μS
FB Voltage Gain FB to COMP 2400 V/V
LX On-Resistance I
LX
= 200mA 150 250 m
LX Leakage Current V
LX
= 16V 10 20 μA
LX Current Limit Duty cycle = 65% 2 2.5 3 A
Current-Sense Transresistance 0.15 0.3 0.45 V/A
Soft-Start Period C
SS
< 200pF 10 ms
SS Output Current 3.5 5 6.5 μA
HIGH-VOLTAGE DRIVER BLOCK
GON1, GON2 Input Voltage 12 30 V
GOFF Input Voltage -10 -4 V
GOFF Supply Current A2–A8 = AGND, no load 120 250 μA
GON1, GON2 Supply Current A2–A8 = AGND, no load 265 430 μA
Output-Voltage Low
(Y2–Y8, YDCHG)
I
OUT
= 10mA
V
GOFF
+ 0.3
V
GOFF
+ 1
V
Output-Voltage High
(Y2–Y8, YDCHG)
I
OUT
= 10mA
V
GON_
- 1
V
GON_
- 0.3
V
Rise Time (Y2–Y8)
C
LOAD
= 100pF, V
GON1
=V
GON2
= 30V, V
GOFF
= -10V
(Note 1)
16 32 ns
Fall Time (Y2–Y8)
C
LOAD
= 100pF, V
GON1
= V
GON2
= 30V, V
GOFF
= -10V
(Note 1)
16 32 ns
Propagation Delay High-to-Low
Transition (Y2–Y8)
C
LOAD
= 100pF
(Note 1)
80 125 ns
Propagation Delay Low-to-High
Transition (Y2–Y8)
C
LOAD
= 100pF
(Note 1)
80 125 ns
Operating Frequency C
LOAD
= 100pF 50 kHz
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= V
LIN
= V
EN
= +3.3V, circuit of Figure 2, V
MAIN
= 8V, V
GON1
= V
GON2
= 21V, V
GOFF
= -6.5V, T
A
= 0°C to +85°C. Typical val-
ues are at T
A
= +25°C, unless otherwise noted.)