Boost Regulator with Integrated Charge Pumps,

Switch Control, and High-Current Op Amp

2

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

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,

PGND, BGND to AGND.........................................-0.3V to +0.3V

LX to PGND ............................................................-0.3V to +20V

SUP to PGND .........................................................-0.3V to +20V

SRC, COM, DRN to AGND .....................................-0.3V to +40V

DRN to COM............................................................-30V to +30V

SRC to SUP ............................................................................23V

REF Short Circuit to AGND.........................................Continuous

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

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

°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

Soldering Temperature (reflow) .......................................+260

°C

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

2.5

5.5

V

2.05

2.25

2.45

V

100

200

µA

1

1.5

4

5

mA

REFERENCE

REF Output Voltage

No external load

1.238

1.250

1.262

V

REF Load Regulation

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

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

18

V

FB Regulation Voltage

1.238

1.250

1.262

V

FB Fault Trip Level

Falling edge

0.96

1

1.04

V

FB Load Regulation

-1

%

FB Line Regulation

-0.2

0

+0.2

%/V

FB Input Bias Current

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