SNOS491D Data sheet

SNOS491D February 2000 – September 2018 LM4051-N

PRODUCTION DATA.

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Mechanical Data (Package|Pins)

DBZ|3
- MPDS108E

Thermal pad, mechanical data (Package|Pins)

Orderable Information

6.5 LM4051-1.2 Electrical Characteristics

over operating free-air temperature range (unless otherwise noted)

PARAMETER		TEST CONDITIONS		MIN	TYP	MAX	UNIT
V_R	Reverse Breakdown Voltage	I_R = 100 μA			1.225		V
	Reverse Breakdown Voltage Tolerance⁽²⁾	I_R = 100 μA	LM4051AIM3⁽¹⁾			±1.2	mV
			LM4051BIM3 LM4051BEM3⁽¹⁾			±2.4
			LM4051CIM3⁽¹⁾			±6
		Industrial Temp. Range T_A = T_J = T_MIN to T_MAX	LM4051AIM3⁽¹⁾			±5.2⁽²⁾
			LM4051BIM3 ⁽¹⁾			±6.4⁽²⁾
			LM4051CIM3⁽¹⁾			±10.1⁽²⁾
		Extended Temp. Range T_A = T_J = T_MIN to T_MAX	LM4051BEM3⁽¹⁾			±8.6⁽²⁾
I_RMIN	Minimum Operating Current	T_J = 25°C			39		µA
		Industrial Temp. Range T_A = T_J = T_MIN to T_MAX		65			µA
		Extended Temp. Range T_A = T_J = T_MIN to T_MAX		70
∆V_R/∆T	Average Reverse Breakdown Voltage Temperature Coefficient⁽²⁾	I_R =10 mA			±20		ppm/ ̊C
		I_R =1 mA			±15
		I_R = 100 μA ∆T = −40 ̊C to 125 ̊C	T_J = 25°C		±15
		I_R = 100 μA ∆T = −40 ̊C to 125 ̊C	T_A = T_J = T_MIN to T_MAX			±50⁽²⁾
∆V_R/∆I_R	Reverse Breakdown Voltage Change with Operating Current Change	I_RMIN ≤ I_R ≤ 1 mA	T_J = 25°C		0.3		mV
			Industrial Temp. Range T_A = T_J = T_MIN to T_MAX			1.1⁽²⁾
			Extended Temp. Range T_A = T_J = T_MIN to T_MAX			1.5⁽²⁾
		1 mA ≤ I_R ≤ 12 mA	T_J = 25°C		1.8
			Industrial Temp. Range T_A = T_J = T_MIN to T_MAX			6⁽²⁾
			Extended Temp. Range T_A = T_J = T_MIN to T_MAX			8⁽²⁾
Z_R	Reverse Dynamic Impedance	I_R = 1 mA, f = 120 Hz			0.5		Ω
e_N	Wideband Noise	I_R = 100 μA 10 Hz ≤ f ≤ 10 kHz			20		μVrms
∆V_R	Reverse Breakdown Voltage Long Term Stability⁽³⁾	t = 1000 hrs, T = 25 ̊C ± 0.1 ̊C, I_R = 100 μA			120		ppm
V_HYST	Thermal Hysteresis⁽⁴⁾	∆T = −40 ̊C to 125 ̊C			0.36		mV/V

(1) Limits are 100% production tested at 25 ̊C. Limits over temperature are guaranteed through correlation using Statistical Quality Control (SQC) methods. The limits are used to calculate National’s AOQL.

(2) This overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage Tolerance ± [(∆VR/∆T)(max∆T)(VR)]. Where, ∆VR/∆T is the VR temperature coefficient, max∆T is the maximum difference in temperature from the reference point of 25°̊C to TMAX or TMIN, and VR is the reverse breakdown voltage. The total overtemperature tolerance for the different grades in the industrial temperature range where max∆T=65 ̊C is shown below:

A-grade: ± 0.425% = ± 0.1% ± 50 ppm/°̊C x 65°̊C
B-grade: ± 0.525% = ± 0.2% ± 50 ppm/°̊C x 65°̊C
C-grade: ± 0.825% = ± 0.5% ± 50 ppm/°̊C x 65°̊C

Therefore, as an example, the A-grade LM4051-1.2 has an over-temperature Reverse Breakdown Voltage tolerance of ± 1.2V x 0.425% = ± 5.2 mV.

(3) Long-term stability is V_R at 25°̊C measured during 1000 hrs.

(4) Thermal hysteresis is defined as the difference in voltage measured at +25 ̊C after cycling to temperature –40 ̊C and the 25 ̊C measurement after cycling to temperature +125 ̊C.