MAX1519ETL データシートの表示（PDF） - Maxim Integrated

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MAX1519ETL

Dual-Phase, Quick-PWM Controllers for Programmable CPU Core Power Supplies

Maxim Integrated 

Dual-Phase, Quick-PWM Controllers for

Programmable CPU Core Power Supplies

ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1, V+ = 15V, VCC = VDD = VSHDN = VTON = VSKIP = VS0 = VS1 = VCODE = 5V, VFB = VCMP = VCMN = VCSP = VCSN

= 1.3V, OFS = SUS = GNDS = D0–D4 = GND; TA = -40°C to +100°C, unless otherwise specified.) (Note 5)

PARAMETER

BIAS AND REFERENCE

Quiescent Supply Current (VCC)

Quiescent Supply Current (VDD)

SYMBOL

CONDITIONS

Measured at VCC, FB forced above the

ICC

regulation point, OAIN- = FB,

VOAIN+ = 1.3V

IDD

Measured at VDD, FB forced above the

regulation point

MIN TYP MAX UNITS

3.2

mA

20

µA

Quiescent Battery Supply Current

(V+)

Shutdown Supply Current (VCC)

Shutdown Supply Current (VDD)

Shutdown Battery Supply Current

(V+)

Reference Voltage

FAULT PROTECTION

Output Overvoltage Protection

Threshold (MAX1545 Only)

IV+

VREF

VOVP

Measured at V+

Measured at VCC, SHDN = GND

Measured at VDD, SHDN = GND

Measured at V+, SHDN = GND,

VCC = VDD = 0 or 5V

VCC = 4.5V to 5.5V, IREF = 0

SKIP = VCC, measured at FB with respect

to unloaded output voltage

1.985

13

50

µA

20

µA

20

µA

20

µA

2.015

V

19

%

Output Undervoltage Protection

Threshold

VUVP

Measured at FB with respect to unloaded

output voltage

67

73

%

VROK Threshold

Measured at FB

Lower threshold

(undervoltage)

-13

with respect to

unloaded output Upper threshold

voltage

(overvoltage)

+7

SKIP = VCC

-7

%

+13

VROK Startup Delay

Measured from the time when FB first

reaches the voltage set by the DAC code

3

ms

after startup

VCC Undervoltage Lockout

Threshold

VUVLO(VCC)

Rising edge, hysteresis = 90mV, PWM

disabled below this level

CURRENT LIMIT AND BALANCE

Current-Limit Threshold Voltage

(Positive, Default)

VLIMIT CMP - CMN, CSP - CSN; ILIM = VCC

Current-Limit Threshold Voltage

(Positive, Adjustable)

Current-Limit Threshold Voltage

(Negative)

VLIMIT

CMP - CMN,

CSP - CSN

VILIM = 0.2V

VILIM = 1.5V

VLIMIT(NEG)

CMP - CMN, CSP - CSN; ILIM = VCC,

SKIP = VCC

Current-Balance Offset

VOS(IBAL)

(VCMP - VCMN) - (VCSP - VCSN); ICCI = 0,

-20mV < (VCMP - VCMN) < 20mV,

1.0V < VCCI < 2.0V

3.90

27

7

72

-30

-3

4.45

V

33

mV

13

mV

78

-42

mV

+3

mV

_______________________________________________________________________________________ 7

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