LM4041 datasheet(4/16 Pages) MICREL

4 / 16 page

LM4040/4041

Micrel, Inc.

M9999-031805

March 2005

LM4040-2.5 Electrical Characteristics (Note 4)

Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25°C. The grades C and D designate initial Reverse Break-

down Voltage tolerance of ±0.5% and ±1.0 respectively.

LM4040CIM3

LM4040DIM3

Symbol

Parameter

Conditions

Typical

Units

(Note 5)

Limits

(Limit)

(Note 6)

Reverse Breakdown Voltage

IR = 100µA

2.500

Reverse Breakdown Voltage

IR = 100µA

±12

±25

mV (max)

Tolerance

(Note 7)

±29

±49

mV (max)

IRMIN

Minimum Operating Current

µA

µA (max)

ΔVR/ΔT

Average Reverse Breakdown

IR = 10mA

±20

ppm/°C

Voltage Temperature

IR = 1mA

±15

100

150

ppm/°C (max)

Coefﬁcient

IR = 100µA

±15

ppm/°C (max)

ΔVR/ΔIR Reverse Breakdown Voltage

IRMIN ≤ IR 1mA

0.3

Change with Operating

0.8

1.0

mV (max)

Current Change

1.0

1.2

mV (max)

1mA ≤ IR 15mA

2.5

6.0

8.0

mV (max)

8.0

10.0

mV (max)

Reverse Dynamic Impedance

IR = 1mA, f = 120Hz

0.3

IAC = 0.1 IR

0.9

1.1

Ω (max)

Wideband Noise

IR = 100µA

10Hz ≤ f ≤ 10kHz

µVRMS

ΔVR

Reverse Breakdown Voltage

t = 1000hrs

Long Term Stability

T = 25°C ±0.1°C

120

ppm

IR = 100µA

Note 4. Speciﬁcation for packaged product only.

Note 5. Typicals are at TJ = 25°C and represent most likely parametric norm.

Note 6. Limits are 100% production tested at 25°C. Limits over temperature are guaranteed through correlation using Statistical Quality Control (SQL)

methods.

Note 7. The boldface (over temperature limit for Reverse Breakdown Voltage Tolerance is deﬁned as the room temperature Reverse Breakdown Volt-

age Tolerance ±[(ΔVR/ΔT)(65°C)(VR)]. ΔVR/ΔT is the VR temperature coefﬁcient, 65°C is the temperature range from –40°C to the reference

point of 25°C, and VR is the reverse breakdown voltage. The total over temperature tolerance for the different grades follows:

C-grade: ±1.15% = ±0.5% ±100ppm/°C × 65°C

D-grade: ±1.98% = ±1.0% ±150ppm/°C × 65°C

Example: The C-grade LM4040-2.5 has an over temperature Reverse Breakdown Voltage tolerance of ±2.5 × 1.15% = ±29mV.

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