ADP3178 データシートの表示（PDF） - Analog Devices

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ADP3178

4-Bit Programmable Synchronous Buck Controllers

Analog Devices 

ADP3158/ADP3178–SPECIFICATIONS (VCC = 12 V, TA = 0؇C to 70؇C, unless otherwise noted.)

Parameter

Symbol

Conditions

Min Typ Max

Unit

SWITCHING REGULATOR

Output Accuracy

1.3 V Output

1.65 V Output

2.05 V Output

Line Regulation

Crowbar Trip Point

Crowbar Reset Point

Crowbar Response Time

VID INPUTS

Input Low Voltage

Input High Voltage

Input Current

Pull-Up Resistance

Internal Pull-Up Voltage

VCS–

∆VOUT

VCROWBAR

tCROWBAR

VIL(VID)

VIH(VID)

IVID

RVID

Figure 1

1.289 1.3 1.311 V

Figure 1

1.637 1.65 1.663 V

Figure 1

2.034 2.05 2.066 V

VCC = 10 V to 14 V

0.06

%

% of Nominal DAC Voltage

115 120 125

%

% of Nominal DAC Voltage

40

50

60

%

Overvoltage to DRVL Going High

400

ns

VID(X) = 0 V

0.6

V

2.0

V

185 250

µA

20

30

kΩ

5.0 5.4 5.7

V

OSCILLATOR

Off Time

CT Charge Current

ERROR AMPLIFIER

Output Resistance

Transconductance

Output Current

Maximum Output Voltage

Output Disable Threshold

–3 dB Bandwidth

CURRENT SENSE

Threshold Voltage

Input Bias Current

Response Time

ICT

RO(ERR)

gm(ERR)

IO(ERR)

VCOMP(MAX)

VCOMP(OFF)

BWERR

VCS(TH)

ICS+, ICS–

tCS

TA = 25°C, CT = 200 pF

TA = 25°C, VOUT in Regulation

TA = 25°C, VOUT = 0 V

CS– Forced to VOUT – 3%

CS– Forced to VOUT – 3%

COMP = Open

CS– Forced to VOUT – 3%

CS– ≤ 0.45 V

0.8 V ≤ COMP ≤ 1 V

CS+ = CS– = VOUT

CS+ – (CS–) > 87 mV to DRVH

Going Low

3.5 4.0

130 150

25

35

1

2.05 2.2

625

3.0

600 750

500

69

78

35

45

1

0.5

50

4.5

170

45

2.35

900

87

54

5

5

µs

µA

µA

MΩ

mmho

µA

V

mV

kHz

mV

mV

mV

µA

ns

OUTPUT DRIVERS

Output Resistance

Output Transition Time

LINEAR REGULATORS

Feedback Current

LR1 Feedback Voltage

LR2 Feedback Voltage

Driver Output Voltage

SUPPLY

DC Supply Current2

UVLO Threshold Voltage

UVLO Hysteresis

RO(DRV(X))

tR, tF

IFB(X)

VLRFB(1)

VLRFB(2)

VLRDRV(X)

ICC

VUVLO

IL = 50 mA

CL = 3000 pF

ADP3158, Figure 2,

VCC = 4.5 V to 12.6 V

ADP3178, Figure 2,

VCC = 4.5 V to 12.6 V

ADP3158, Figure 2,

VCC = 4.5 V to 12.6 V

ADP3178, Figure 2,

VCC = 4.5 V to 12.6 V

VCC = 4.5 V, VLRFB(X) = 0 V

6

Ω

80

ns

0.3 1

µA

2.44 2.5 2.56

V

0.97 1.0 1.03

V

1.75 1.8 1.85

V

0.97 1.0 1.03

V

4.2

V

7

6.75 7

0.8 1

9

mA

7.25

V

1.2

V

NOTES

1All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC).

2Dynamic supply current is higher due to the gate charge being delivered to the external MOSFETs.

Specifications subject to change without notice.

–2–

REV. A

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