SNOS491 Data sheet

SNOS491D February 2000 – September 2018 LM4051-N

PRODUCTION DATA.

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DBZ|3
- MPDS108G

Thermal pad, mechanical data (Package|Pins)

Orderable Information

6.6 LM4051-ADJ Electrical Characteristics

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

PARAMETER		TEST CONDITIONS			TYP	MAX	UNIT
V_REF	Reference Voltage	I_R = 100 μA, V_OUT = 5 V			1.212		V
	Reference Voltage Tolerance⁽²⁾⁽⁴⁾	I_R = 100 μA, V_OUT =5 V	LM4051AIM3⁽¹⁾			±1.2	mV
			LM4051BIM3⁽¹⁾			±2.4
			LM4051CIM3⁽¹⁾			±6
		Industrial Temp. Range T_A = T_J = T_MIN to T_MAX	LM4051AIM3⁽¹⁾			±5.2
			LM4051BIM3⁽¹⁾			±6.4
			LM4051CIM3⁽¹⁾			±10.1
I_RMIN	Minimum Operating Current	LM4051AIM3⁽¹⁾			36		µA
		LM4051BIM3⁽¹⁾			36
		LM4051CIM3⁽¹⁾			36
		Industrial Temp. Range T_A = T_J = T_MIN to T_MAX	LM4051AIM3⁽¹⁾			60
			LM4051BIM3⁽¹⁾			60
			LM4051CIM3 ⁽¹⁾			65
∆V_REF/∆I_R	Reference Voltage Change with Operating Current Change	I_RMIN ≤ I_R ≤ 1 mA V_OUT ≥ 1.6 V⁽³⁾	T_J = 25°C		0.3		mV
		I_RMIN ≤ I_R ≤ 1 mA V_OUT ≥ 1.6 V⁽³⁾	Industrial Temp. Range T_A = T_J = T_MIN to T_MAX			1.1⁽²⁾	mV
		1 mA ≤ I_R ≤ 12 mA V_OUT ≥ 1.6 V⁽³⁾	T_J = 25°C		0.6
		1 mA ≤ I_R ≤ 12 mA V_OUT ≥ 1.6 V⁽³⁾	Industrial Temp. Range T_A = T_J = T_MIN to T_MAX			6⁽²⁾
∆V_REF/∆V_O	Reference Voltage Change with Output Voltage Change	I_R = 0.1 mA	T_J = 25°C		–1.69		mV
∆V_REF/∆V_O	Reference Voltage Change with Output Voltage Change	I_R = 0.1 mA	Industrial Temp. Range T_A = T_J = T_MIN to T_MAX			–2.8⁽²⁾	mV
I_FB	Feedback Current				70	130	nA
∆V_REF/∆T	Average Reference Voltage Temperature Coefficient (Note 8)	V_OUT = 2.5 V ∆T = −40 ̊C to +125 ̊C	I_R = 10 mA	T_J = 25°C	20		ppm/°C
			I_R = 10 mA	Industrial Temp. Range T_A = T_J = T_MIN to T_MAX		±50⁽²⁾
			I_R = 1 mA	T_J = 25°C	15
			I_R = 1 mA	Industrial Temp. Range T_A = T_J = T_MIN to T_MAX		±50⁽²⁾
			I_R =100 μA	T_J = 25°C	15
			I_R =100 μA	Industrial Temp. Range T_A = T_J = T_MIN to T_MAX		±50⁽²⁾
Z_OUT	Dynamic Output Impedance	I_R = 1 mA, f = 120 Hz, I_AC = 0.1 I_R	V_OUT = V_REF		0.3		Ω
Z_OUT	Dynamic Output Impedance	I_R = 1 mA, f = 120 Hz, I_AC = 0.1 I_R	V_OUT = 10 V		2		Ω
e_N	Wideband Noise	I_R = 100 μA, V_OUT = V_REF, 10 Hz ≤ f ≤ 10 kHz			20		µVrms
∆V_REF	Reference Voltage Long Term Stability⁽⁵⁾	t = 1000 hrs, I_R = 100 μA, T = 25 ̊C ± 0.1 ̊C			120		ppm
V_HYST	Thermal Hysteresis⁽⁶⁾	∆T = −40 ̊C to +125 ̊C			0.3		mV/V

(1) Limits are 100% production tested at 25 ̊C. Limits over temperature are ensured 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 ± [(∆V_R/∆T)(max∆T)(V_R)]. Where, ∆V_R/∆T is the V_R temperature coefficient, max∆T is the maximum difference in temperature from the reference point of 25°̊C to T_MAX or T_MIN, and V_R 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 × 65°̊C
B-grade: ± 0.525% = ± 0.2% ± 50 ppm/°̊C × 65°̊C
C-grade: ± 0.825% = ± 0.5% ± 50 ppm/°̊C × 65°̊C

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

(3) When V_OUT ≤ 1.6 V, the LM4051-ADJ in the SOT-23 package must operate at reduced I_R. This is caused by the series resistance of the die attach between the die (–) output and the package (–) output pin. See the Output Saturation curve in the Typical Characteristics section.

(4) Reference voltage and temperature coefficient will change with output voltage. See Typical Characteristics curves.

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

(6) 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.