TelCom Semiconductor Inc LM385BCZB-2.5, LM385BCZB-1.2, LM385BCOA-2.5, LM385BCOA-1.2, LM385CZB-2.5 Datasheet
...
3-9
TELCOM SEMICONDUCTOR, INC.
7
6
5
4
3
1
2
8
LOW POWER, BANDGAP VOL T AGE REFERENCES
LM285/285B-1.2V
LM285/285B-2.5V
LM385/385B-1.2V
LM385/385B-2.5V
Temperature
Part No. Package Range Voltage Tolerance
LM285BEOA-1.2 8-Pin SOIC – 40°C to +85°C 1.2 1%
LM285BEOA-2.5 8-Pin SOIC – 40°C to +85°C 2.5 1.5%
LM285BEZB-1.2 TO-92-3 – 40°C to +85°C 1.2 1%
LM285BEZB-2.5 TO-92-3 – 40°C to +85°C 2.5 1.5%
LM285EOA-1.2 8-Pin SOIC – 40°C to +85°C 1.2 2%
LM285EOA-2.5 8-Pin SOIC – 40°C to +85°C 2.5 3%
LM285EZB-1.2 TO-92-3 – 40°C to +85°C 1.2 2%
LM285EZB-2.5 TO-92-3 – 40°C to +85°C 2.5 3%
LM385BCOA-1.2 8-Pin SOIC 0°C to +70°C 1.2 1%
LM385BCOA-2.5 8-Pin SOIC 0°C to +70°C 2.5 1.5%
LM385BCZB-1.2 TO-92-3 0°C to +70°C 1.2 1%
LM385BCZB-2.5 TO-92-3 0°C to +70°C 2.5 1.5%
LM385COA-1.2 8-Pin SOIC 0°C to +70°C 1.2 2%
LM385COA-2.5 8-Pin SOIC 0°C to +70°C 2.5 3%
LM385CZB-1.2 TO-92-3 0°C to +70°C 1.2 2%
LM385CZB-2.5 TO-92-3 0°C to +70°C 2.5 3%
PIN CONFIGURATIONS
GENERAL DESCRIPTION
The LM285/385-1.2V (1.235V output) and LM285/385-
2.5V (2.5V output) are bipolar, two-terminal, bandgap voltage references that offer precision performance without
premium price. These devices do not require thin-film resistors, greatly lowering manufacturing complexity and cost.
A 30ppm/°C output temperature coefficient and a 15µA
to 20mA operating current range make these voltage references especially attractive for multimeter, data acquisition
and telecommunications applications.
FEATURES
■ Output Tolerance....................................... 1% or 2%
■ Output Voltage Option
LM285/385-1.2V ........................................1.235V
LM285/385-2.5V ............................................2.5V
■ Wide Operating Current Range
LM285/385-1.2V ........................... 15µA to 20mA
LM285/385-2.5V ........................... 20µA to 20mA
■ Temperature Coefficient .......................... 30ppm/°C
■ Dynamic Impedance.......................................... 0.6Ω
■ TO-92-3 Plastic Package
■ 8-Pin Plastic Narrow Body (SOIC) Package
APPLICATIONS
■ ADC and DAC Reference
■ Current Source Generation
■ Threshold Detectors
■ Power Supplies
■ Multi-meters
NC = NO INTERNAL CONNECTION
1
2
3
4
8
7
6
5
CATHODE
NC
NC
NC
NC
NC
NC
ANODE
1
TO-92-3 PLASTIC
(BOTTOM VIEW)
SURFACE MOUNT
8-PIN PLASTIC SOIC
3
LM285/285B EZB-1.2
LM285/285B EZB-2.5
LM385/385B CZB-1.2
LM385/385B CZB-2.5
LM285/285B E0A-1.2
LM285/285B EOA-2.5
LM385/385B COA-1.2
LM385/385B COA-2.5
2
LM285/B/385/B-9 11/6/96
ORDERING INFORMATION
3-10
TELCOM SEMICONDUCTOR, INC.
LOW POWER, BANDGAP
VOL T AGE REFERENCES
LM285/285B-1.2V
LM285/285B-2.5V
LM385/385B-1.2V
LM385/385B-2.5V
ABSOLUTE MAXIMUM RATINGS*
Forward Current .................................................... +10mA
Reverse Current.................................................... +30mA
Storage Temperature Range ................– 65°C to +150°C
Operating Temperature Range
TO-92 Package ................................– 40°C to +85°C
Surface Mount Package ...................– 40°C to +85°C
Lead Temperature (Soldering, 10 sec)
TO-92 Package ..............................................+300°C
Surface Mount Package .................................+300°C
Power Dissipation
Limited by Forward/Reverse Current
*Functional operation above the absolute maximum stress ratings is not
implied.
ELECTRICAL CHARACTERISTICS: T
A
= +25°C, unless otherwise specified.
Symbol Parameter Test Conditions Min Typ Max Min Typ Max Unit
V
(BR)R
Reverse Breakdown Voltage IR ≤ 20mA V
LM285B-1.2/LM385B-1.2 1.223 1.235 1.247 1.223 1.235 1.247
TA = T
low
to T
high
(Note 1) 1.200 — 1.270 1.210 — 1.260
LM285-1.2V/LM385-1.2V 1.205 1.235 1.260 1.205 1.235 1.260
TA = T
low
to T
high
(Note 1) 1.192 — 1.273 1.192 — 1.273
I
RMIN
Minimum Operating Current µA
T
A
= +25°C — 8.0 15 — 8.0 15
TA = T
low
to T
high
(Note 1) — — 20 — — 20
∆V
(BR)R
Reverse Breakdown Voltage mV
Change with Current
I
Rmin
= IR = 1.0mA, TA = +25°C — — 1.0 — — 1.0
T
A
= T
low
to T
high
(Note 1) — — 1.5 — — 1.5
1.0mA = I
R
= 20mA, TA = +25°C — —10 — —20
T
A
= T
low
to T
high
(Note 1) — — 20 — — 25
Z Reverse Dynamic Impedance IR = 100µA — 0.6 — — 0.6 — Ω
∆V
(BR)
/∆T Average Temperature Coefficient 10µA ≤ IR ≤ 20mA — 30 100 — 30 100 ppm/°C
S Long Term Stability IR = 100µA, — 20 — — 20 — ppm/kHR
TA = +25°C ±0.1°C
Symbol Parameter Test Conditions Min Typ Max Min Typ Max Unit
V
(BR)R
Reverse Breakdown Voltage IR = 20mA V
LM285B-2.5/LM385B-2.5 2.462 2.5 2.538 2.462 2.5 2.538
TA = T
low
to T
high
(Note 1) 2.415 — 2.585 2.436 — 2.564
LM285-2.5V/LM385-2.5V 2.425 2.5 2.575 2.425 2.5 2.575
TA = T
low
to T
high
(Note 1) 2.400 — 2.600 2.400 — 2.600
I
RMIN
Minimum Operating Current µA
T
A
= +25°C — 13 20 — 13 20
TA = T
low
to T
high
(Note 1) — — 30 — — 30
∆V
(BR)R
Reverse Breakdown Voltage mV
Change with Current
I
Rmin
= IR = 1.0mA, TA = +25°C — — 1.0 — — 2.0
T
A
= T
low
to T
high
(Note 1) — — 1.5 — — 2.5
1.0mA = I
R
= 20mA, TA = +25°C — —10 — —20
T
A
= T
low
to T
high
(Note 1) — — 20 — — 25
Z Reverse Dynamic Impedance IR = 100µA — 0.6 — — 0.6 — Ω
∆V
(BR)
/∆T Average Temperature Coefficient 20µA ≤ IR ≤ 20mA — 30 100 — 30 100 ppm/°C
S Long Term Stability IR = 100µA, — 20 — — 20 — ppm/kHR
TA = +25°C ±0.1°C
Note: 1. T
low
= – 40°C for LM285-1.2, LM285-2.5, LM285B-1.2, LM285B-2.5
0°C for LM385-1.2, LM385B-1.2, LM385-2.5, LM385B-2.5
T
high
= +85°C for LM285-1.2, LM285-2.5, LM285B-1.2, LM285B-2.5
+70°C for LM385-1.2, LM385B-1.2, LM385-2.5, LM385B-2.5
LM285 / LM285B–1.2 LM385 / LM385B–1.2
LM285 / LM285B–2.5 LM385 / LM385B–2.5
Loading...