Rainbow-electronics MAX1637 Manual do Utilizador descarregar pdf (Página 9)

MAX1637

Miniature, Low-Voltage,

Precision Step-Down Controller

_______________________________________________________________________________________ 9

The pulse-width-modulation (PWM) controller consists

of a multi-input PWM comparator, high-side and low-

side gate drivers, and logic. It uses a 200kHz/300kHz

synchronizable oscillator. The MAX1637 contains fault-

protection circuits that monitor the PWM output for

undervoltage and overvoltage. It includes a 1.100V pre-

cision reference. The circuit blocks are powered from

an internal IC power rail that receives power from V

provides direct power to the synchronous-switch

gate driver, but provides indirect power to the high-

side-switch gate driver via an external diode-capacitor

boost circuit.

REF

POWER

200kHz

300kHz

OSC

PWM

LOGIC

3.15V TO 5.5V

BATT

OUT

REF

SHDN

SYNC

PGND

BST

SKIP

CSH

CSL

REF

GND

REF

+7%

REF

-30%

60kHz

LP FILTER

SHUTDOWN

CONTROL

1.1V

REF.

ERROR

INTEGRATOR

MAX1637

OVERVOLTAGE

FAULT

UNDER-

VOLTAGE

FAULT

OFF

SLOPE

COMPENSATION

BIAS

Figure 2. Functional Diagram

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 19 20

Miniature, Low-Voltage 1

Comentários a estes Manuais

Sem comentários

Rainbow-electronics MAX1637 Manual do Utilizador Página 9

Comentários a estes Manuais

Manuais e produtos relacionados com Sensores Rainbow-electronics MAX1637