MAX17075(2008) Просмотр технического описания (PDF) - Maxim Integrated

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MAX17075
(Rev.:2008)

Boost Regulator with Integrated Charge Pumps, Switch Control, and High-Current Op Amp

Maxim Integrated 

Boost Regulator with Integrated Charge Pumps,

Switch Control, and High-Current Op Amp

ABSOLUTE MAXIMUM RATINGS

VCC, CTL, RSTIN, RST to AGND ..........................-0.3V to +7.5V

DEL, REF, COMP, FB, FBN,

FBP to AGND .......................................-0.3V to (VVCC + 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 (VSUP + 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 (VSUP + 0.3)

DRVN, DRVP RMS Current ...............................................200mA

LX, PGND RMS Current Rating.............................................2.4A

Continuous Power Dissipation (TA = +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

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.

ELECTRICAL CHARACTERISTICS

(VVCC = +5V, Circuit of Figure 1, VAVDD = VSUP = +13V, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)

PARAMETER

CONDITIONS

MIN TYP MAX UNITS

VCC Input Supply Range

VCC Undervoltage-Lockout (UVLO) Threshold

VCC Shutdown Current

VCC Quiescent Current

REFERENCE

REF Output Voltage

REF Load Regulation

REF Sink Current

VCC rising, hysteresis (typ) = 50mV

VCC = 2V

VFB = 1.3V, not switching

VFB = 1.0V, switching

No external load

0n < ILOAD < 50μA

In regulation

2.5

5.5

V

2.05 2.25 2.45

V

100 200

μA

1

1.5

mA

4

5

1.238 1.250 1.262

V

6

mV

10

μA

REF Undervoltage-Lockout Threshold

OSCILLATOR AND TIMING

Rising edge, hysteresis (typ) = 200mV

1

1.17

V

Frequency

Oscillator Maximum Duty Cycle

Duration to Trigger Fault Condition

DEL Capacitor Charge Current

DEL Turn-On Threshold

DEL Discharge Switch On-Resistance

STEP-UP REGULATOR

FB or FBP or FBN below threshold

During startup, VDEL = 1.0V

1000 1200 1400 kHz

87

90

93

%

47

55

65

ms

4

5

6

μA

1.19 1.25 1.31

V

20



Output Voltage Range

FB Regulation Voltage

FB Fault Trip Level

FB Load Regulation

FB Line Regulation

FB Input Bias Current

FB Transconductance

FB Voltage Gain

FB = COMP, CCOMP = 1nF

Falling edge

0 < ILOAD < full, transient only

VCC = 2.5V to 5.5V

VFB = 1.25V

I = ±2.5μA at COMP, FB = COMP

FB to COMP

VVCC

18

V

1.238 1.250 1.262

V

0.96

1

1.04

V

-1

%

-0.2

0

+0.2 %/V

50

125 200

nA

75

160 280

μS

2600

V/V

2 _______________________________________________________________________________________

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