Datasheet

MAX17094
Internal-Switch Boost Regulator with Integrated
7-Channel Driver, VCOM Calibrator, Op Amp, and LDO
______________________________________________________________________________________ 11
STEP-UP REGULATOR PULSED
LOAD-TRANSIENT RESPONSE (20mA TO 1A)
MAX17094 toc12
10μs/div
0
0
0
0
V
LX
10V/div
I
L1
1A/div
V
MAIN
(AC-COUPLED)
500mV/div
I
MAIN
1A/div
L1 = 4.1μHF R
COMP
= 40.2kΩ
C
COMP
= 1000pF
POWER-UP SEQUENCE
OF ALL SUPPLY OUTPUTS
MAX17094 toc13
1ms/div
0
0
0
0
0
0
0
V
IN
5V/div
V
L
5V/div
V
COM
5V/div
V
LOUT
5V/div
V
GON
20V/div
V
GOFF
20V/div
V
MAIN
5V/div
LDO OUTPUT REGULATION
vs. LOAD CURRENT
MAX17094 toc14
LOAD CURRENT (mA)
OUTPUT ERROR (%)
10 100
-0.20
0
0.20
-0.40
0 1000
V
IN
= 3.0V
V
IN
= 5.0V
LDO OUTPUT LINE REGULATION
vs. INPUT VOLTAGE
MAX17094 toc15
V
LIN
VOLTAGE (V)
OUTPUT ERROR (%)
12345
0.05
0.10
0.15
0.20
0.25
0
06
I
OUT
= 250mA
I
LOUT
= 100mA
OPERATIONAL AMPLIFIER
FREQUENCY RESPONSE
MAX17094 toc16
FREQUENCY (kHz)
GAIN (dB)
1000 10,000
-20
-10
-15
0
-5
5
10
-25
100 100,000
NO LOAD
100pF LOAD
A
V
= 1
V
IN
= 3.3V
OPERATIONAL AMPLIFIER RAIL-TO-RAIL
INPUT/OUTPUT WAVEFORMS
MAX17094 toc17
10
μ
s/div
0
0
V
COM
5V/div
V
POS
5V/div
OPERATIONAL AMPLIFIER
LOAD-TRANSIENT RESPONSE
MAX17094 toc18
2
μ
s/div
0
0
I
VCOM
100mA/div
V
VCOM
(AC-COUPLED)
1V/div
OPERATIONAL AMPLIFIER
LARGE-SIGNAL STEP RESPONSE
MAX17094 toc19
200ns/div
0
0
V
VCOM
2V/div
V
POS
2V/div
Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)