PC494 查看數據表（PDF） - NEC => Renesas Technology

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PC494

SWITCHING REGULATOR CONTROL CIRCUIT

NEC => Renesas Technology 

µPC494

Block

Characteristics

Symbol

Conditions

MIN. TYP.

Output

Section

Collector Cut-off Current

ICER

VCE =#40 V, VCC =#40 V,

Common Emitter

Emitter Cut-off Current

VCC =#VC =#40 V, VE = 0 V,

Emitter Follower

Collector Saturation

Voltage

Common

Emitter

VCE(sat)

IC = 200 mA, VE = 0 V

0.95

Emitter

VCE(ON)

IE = −200 mA, VC = 15 V

1.6

Follower

Output Voltage Rise Common tr1

VCC =#15 V, RL = 150 Ω,

100

Time

Emitter

IC ≅ 100 mA, TA = 25°C,

Output Voltage Fall

tf1

see Figure 1.

70

Time

Output Voltage Rise Emitter

tr2

VC =#15 V, RL = 150 Ω,

100

Time

Follower

IE ≅ 100 mA, TA = 25°C,

Output Voltage Fall

tf2

see Figure 1.

70

Time

Total

Standby Current

ICC(S.B)

VCC =#15 V,

8

Device

all other pins open.

Bias Current

ICC(BI)

V(pin 4) =#2 V,

10

see Figure 1.

Remark The TYP. values are values at TA = 25°C, except for the characteristics of temperature.

MAX.

100

−100

1.3

2.5

200

200

200

200

12.5

(2/2)

Unit

µA

µA

V

V

ns

ns

ns

ns

mA

mA

Notes 1. The short circuit output current flows for no more than 1 second. Repeat operation is possible if the internal

heat accumulation is not within a harmful range.

2. Standard deviation is a measure of the statistical distribution about the mean as derived from the formula ;

N

σ=

∑ (Xn − X)2

n=1

N−1

Calculation expression of frequency fOSC is as follows ;

fOSC ≅

1

0.817 RT•CT + 1.42•10−6

(Hz)

[RT] = Ω, [CT] = F

Data Sheet G12649EJ4V0DS00

5

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