Zetex (Now Diodes) ZRC500A01, ZRC500A02, ZRC500A03, ZRC500F01, ZRC500F02, ZRC500F03, ZRC500N01, ZRC500N02, ZRC500N03, ZRC500R01, ZRC500R02, ZRC500R03, ZRC500Y01, ZRC500Y02, ZRC500Y03 Schematic [ru]

PRECISION 5.0 VOLT LOW KNEE CURRENT		ZRC500
VOLTAGE REFERENCE
ISSUE 3 - MARCH 1998
DEVICE DESCRIPTION	FEATURES

The ZRC500 uses a bandgap circuit design to achieve a precision micropower voltage reference of 5.0 volts. The device is available in small outline surface mount packages, ideal for applications where space saving is important, as well as packages for through hole requirements.

The ZRC500 design provides a stable voltage without an external capacitor and is stable with capacitive loads. The ZRC500 is recommended for operation between 25μA and 5mA and so is ideally suited to low power and battery powered applications.

Excellent performance is maintained to an absolute maximum of 25mA, however the rugged design and 20 volt processing allows the reference to withstand transient effects and currents up to 200mA. Superior switching capability allows the device to reach stable operating conditions in only a few microseconds.

∙Small outline SOT23, SO8 and TO92 style packages

∙No stabilising capacitor required

∙Low knee current, 19μA typical

∙Typical TC 30ppm/°C

∙Typical slope resistance 0.4Ω

∙± 3%, 2% and 1% tolerance

∙Industrial temperature range

∙Operating current 25μA to 5mA

∙Transient response, stable in less than 10μs

∙Optional extended current range

APPLICATIONS

∙Battery powered and portable equipment.

∙Instrumentation.

∙Test equipment.

∙Metering and measurement systems.

SCHEMATIC DIAGRAM

V

R

Gnd

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IR (max) − IR (min)

ABSOLUTE MAXIMUM RATING

Reverse Current	25mA
Forward Current	25mA
Operating Temperature	-40 to 85°C
Storage Temperature	-55 to 125°C

ZRC500

Power Dissipation (Tamb=25°C)

SOT23	330mW
E-Line, 3 pin (TO92)	500mW
E-Line, 2 pin (TO92)	500mW
SO8	625mW

ELECTRICAL CHARACTERISTICS

TEST CONDITIONS (Unless otherwise stated) Tamb=25°C

SYMBOL		PARAMETER	CONDITIONS		LIMITS				TOL.	UNITS
									%
				MIN		TYP		MAX
VR		Reverse Breakdown Voltage	IR=150μA	4.95		5.0		5.05	1	V
				4.9		5.0		5.1	2
				4.85		5.0		5.15	3
IMIN		Minimum Operating Current				19		25		μA
IR		Recommended Operating		0.025				5		mA
		Current
TC	†	Average Reverse Breakdown				30		90		ppm/°C
		Voltage Temp. Co.	IR(min) to
RS	§	Slope Resistance	IR(max)			0.4		2		Ω
ZR		Reverse Dynamic Impedance	IR = 1mA			0.3		0.8		Ω
			f = 100Hz
			IAC=0.1 IR
EN		Wideband Noise Voltage	IR = 150μA			105				μV(rms)
			f = 10Hz to
			10kHz

	† TC =	(VR(max)−VR(min)) x 1000000
		VR x (T(max)−T(min))

Note: VR(max) - VR(min) is the maximum deviation in reference voltage measured over the full operating temperature range.

§ RS = VR Change(IR (min) to IR (max))

	60
	40
(uA)
Current	20
			25 °C
Reverse		85 °C
				-40 °C
	0
	0	2	4	6

Reverse Voltage (V)

Reverse Characteristics

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