LM3420 datasheet(5/26 Pages) TI1

部品番号	LM3420

部品情報	8.4-V Li-Ion Battery Charge Controller

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LM3420

www.ti.com

SNVS116E – MAY 1998 – REVISED DECEMBER 2014

6.5 LM3420 Electrical Characteristics

Unless otherwise specified, specifications apply over full operating temperature range and VIN = VREG, VOUT = 1.5 V.

PARAMETER

TEST CONDITIONS

MIN(1)

TYP(2)

MAX(1)

UNIT

IOUT = 1 mA, TJ = 25°C

8.316

8.4

8.484

Regulation voltage

V

IOUT = 1 mA

8.232

8.4

8.568

VREG

IOUT = 1 mA, TJ = 25°C

–1%

1%

Regulation voltage

tolerance

IOUT = 1 mA

–2%

2%

IOUT = 1 mA, TJ = 25°C

85

125

IQ

Quiescent current

μA

IOUT = 1 mA

85

150

20

μA ≤ IOUT ≤ 1 mA, VOUT = 6 V

1

3.3

TJ = 25°C

Transconductance

20

μA ≤ IOUT ≤ 1 mA, VOUT = 6 V

0.50

3.3

Gm

mA/mV

ΔIOUT/ΔVREG

1 mA

≤ IOUT ≤ 15 mA, VOUT = 6 V

2.5

6

1 mA

≤ IOUT ≤ 15 mA, VOUT = 6 V

1.4

6

1 V

≤ VOUT ≤ VREG − 1.2V, RL = 470 Ω

(3)

450

1000

TJ = 25°C

V/V

1 V

≤ VOUT ≤ VREG − 1.3 V, RL = 470 Ω

200

1000

Voltage gain

AV

ΔVOUT/ΔVREG

1 V

≤ VOUT ≤ VREG − 1.2 V, RL = 5 kΩ

(3)

1000

3500

TJ = 25°C

V/V

1 V

≤ VOUT ≤ VREG − 1.3 V, RL = 5 kΩ

700

3500

VSAT

VIN = VREG + 100 mV

1

1.2

TJ = 25°C

Output saturation(4)

V

VIN = VREG + 100 mV

1

1.3

IL

VIN = VREG − 100 mV, VOUT = 0 V

0.1

0.5

TJ = 25°C

Output leakage current

μA

VIN = VREG − 100 mV, VOUT = 0 V

0.1

1

Rf

Internal feedback

135

181

227

k

Ω

TJ = 25°C

resistor(5)

En

Output noise voltage

IOUT = 1 mA, 10 Hz ≤ f ≤ 10 kHz

140

μVRMS

(1)

Limits are 100% production tested at 25°C. Limits over the operating temperature range are specified through correlation using

Statistical Quality Control (SQC) methods. The limits are used to calculate Averaging Outgoing Quality Level (AOQL).

(2)

Typical numbers are at 25°C and represent the most likely parametric norm.

(3)

Actual test is done using equivalent current sink instead of a resistor load.

(4)

VSAT = V(IN) − VOUT, when the voltage at the IN pin is forced 100 mV above the nominal regulating voltage (VREG).

(5)

See Application and Implementation and Typical Characteristics sections for information on this resistor.

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