MAX1652 데이터 시트보기 (PDF) - Maxim Integrated

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MAX1652

High-Efficiency, PWM, Step-Down DC-DC Controllers in 16-Pin QSOP

Maxim Integrated 

High-Efficiency, PWM, Step-Down

DC-DC Controllers in 16-Pin QSOP

ELECTRICAL CHARACTERISTICS (continued)

(V+ = +15V, GND = PGND = 0V, SYNC = REF, IVL = IREF = 0A, TA = -40°C to +85°C, unless otherwise noted.) (Note 3)

PARAMETER

CONDITIONS

3.3V and 5V STEP-DOWN CONTROLLERS

Input Supply Range

5V Output Voltage (CSL)

0 < (CSH - CSL) < 70mV, FB = VL, 6V < V+ < 30V,

includes line and load regulation

MIN TYP MAX

4.5

30

4.80

5.30

3.3V Output Voltage (CSL)

0 < (CSH - CSL) < 70mV, FB = VL, 4.5V < V+ < 30V,

includes line and load regulation

Feedback Voltage

CSH - CSL = 0V, 5V < V+ < 30V,

CSL = FB, SKIP = 0V

MAX1655

MAX1652/MAX1653/

MAX1654

Line Regulation

6V < V+ < 30V

Current-Limit Voltage

CSH - CSL, positive

CSH - CSL, negative

FLYBACK/PWM CONTROLLER

SECFB Regulation Setpoint

Falling edge, hysteresis = 22mV (MAX1652)

Falling edge, hysteresis = 22mV (MAX1654)

INTERNAL REGULATOR AND REFERENCE

VL Output Voltage

SHDN = 2V, 0 < IVL < 25mA, 5.5V < V+ < 30V

VL Fault Lockout Voltage

Rising edge, hysteresis = 50mV

VL/CSL Switchover Voltage

Rising edge, hysteresis = 60mV

Reference Output Voltage

No external load (Note 1)

Reference Load Regulation

V+ Shutdown Current

0 < IREF < 100µA

SHDN = 0V, V+ = 30V, CSL = 0 or 5.5V

V+ Off-State Leakage Current FB = CSH = CSL = 5.5V, VL switched over to CSL

Quiescent Power Consumption

OSCILLATOR AND INPUTS/OUTPUTS

Oscillator Frequency

SYNC = REF

SYNC = 0 or 5V

SYNC High Pulse Width

SYNC Low Pulse Width

Oscillator Sync Range

Maximum Duty Cycle

SYNC = REF

SYNC = 0 or 5V

DL On-Resistance

High or low

DH On-Resistance

High or low, BST - LX = 4.5V

3.16

0.96

2.40

70

-40

2.40

-0.08

4.7

3.75

4.2

2.43

250

120

250

250

210

97

98

3.50

1.04

2.60

0.06

130

-160

2.60

0.08

5.3

4.05

4.7

2.57

15

10

15

2

350

180

320

5

5

Note 3: Specifications from 0°C to -40°C are guaranteed by design, not production tested.

UNITS

V

V

V

V

V

%/V

mV

V

V

V

V

V

mV

µA

µA

mW

kHz

ns

ns

kHz

%

Ω

Ω

4 _______________________________________________________________________________________

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