User Manual

MAX17075
Boost Regulator with Integrated Charge Pumps,
Switch Control, and High-Current Op Amp
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
VCC
= +5V, Circuit of Figure 1, V
AVDD
= V
SUP
= +13V, T
A
= 0°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
VCC, CTL, RSTIN, RST to AGND ..........................-0.3V to +7.5V
DEL, REF, COMP, FB, FBN,
FBP to AGND .......................................-0.3V to (V
VCC
+ 0.3V)
PGND, BGND to AGND.........................................-0.3V to +0.3V
LX to PGND ............................................................-0.3V to +20V
SUP to PGND .........................................................-0.3V to +20V
DRVN, DRVP to PGND..............................-0.3V to (V
SUP
+ 0.3V)
SRC, COM, DRN to AGND .....................................-0.3V to +36V
DRN to COM............................................................-30V to +30V
SRC to SUP ............................................................................23V
REF Short Circuit to AGND.........................................Continuous
POS, NEG, OUT to AGND...........................-0.3V to (V
SUP
+ 0.3)
DRVN, DRVP RMS Current ...............................................200mA
LX, PGND RMS Current Rating.............................................2.4A
Continuous Power Dissipation (T
A
= +70°C)
24-Pin TQFN (derate 27.8mW/°C above +70°C).......2222mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
Input Supply Range 2.5 5.5 V
V
CC
Undervoltage-Lockout (UVLO) Threshold V
CC
rising, hysteresis (typ) = 50mV 2.05 2.25 2.45 V
V
CC
Shutdown Current V
CC
= 2V 100 200 μA
V
FB
= 1.3V, not switching 1 1.5
V
CC
Quiescent Current
V
FB
= 1.0V, switching 4 5
mA
REFERENCE
REF Output Voltage No external load 1.238 1.250 1.262 V
REF Load Regulation 0n < I
LOAD
< 50μA 6 mV
REF Sink Current In regulation 10 μA
REF Undervoltage-Lockout Threshold Rising edge, hysteresis (typ) = 200mV 1 1.17 V
OSCILLATOR AND TIMING
Frequency 1000 1200 1400 kHz
Oscillator Maximum Duty Cycle 87 90 93 %
Duration to Trigger Fault Condition FB or FBP or FBN below threshold 47 55 65 ms
DEL Capacitor Charge Current During startup, V
DEL
= 1.0V 4 5 6 μA
DEL Turn-On Threshold 1.19 1.25 1.31 V
DEL Discharge Switch On-Resistance 20 
STEP-UP REGULATOR
Output Voltage Range V
VCC
18 V
FB Regulation Voltage FB = COMP, C
COMP
= 1nF 1.238 1.250 1.262 V
FB Fault Trip Level Falling edge 0.96 1 1.04 V
FB Load Regulation 0 < I
LOAD
< full, transient only -1 %
FB Line Regulation V
CC
= 2.5V to 5.5V -0.2 0 +0.2 %/V
FB Input Bias Current V
FB
= 1.25V 50 125 200 nA
FB Transconductance I = ±2.5μA at COMP, FB = COMP 75 160 280 μS
FB Voltage Gain FB to COMP 2600 V/V