G923 datasheet(3/9 Pages) INTERPOINT

3 / 9 page

Ver: 1.1

Jan 19, 2006

TEL: 886-3-5788833

http://www.gmt.com.tw

G923

Global Mixed-mode Technology Inc.

Absolute Maximum Ratings

VIN to GND. . . . . . . . . . . . . . . . . . . . . . . . .-0.3V to 7V

Output Short-Circuit Duration . . . . . . . . . . . . . .Infinite

SET to GND . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 7V

SHDN to GND. . . . . . . . . . . . . . . . . . . . . .-0.3V to 7V

SHDN to IN. . . . . . . . . . . . . . . . . . . . . . . .-7V to 0.3V

OUT to GND. . . . . . . . . . . . . . . . -0.3V to (VIN + 0.3V)

Continuous Power Dissipation (TA = 25°C)

SOT-23-5. . . . . . . . . . . . . . . . . . . . . .. . . . . . . . 520mW

Operating Temperature Range . . . . . . . -40°C to 85°C

Junction Temperature. . . . . . . . . . . . . . . . . . . . .150°C

Thermal Resistance Junction to Ambient, (θJA)

SOT-23-5. . . . . . . . . . . . . . . . . . . . . . . . 240°C/Watt

(1)

Storage Temperature Range. . . . . . . .-65°C to 160°C

Reflow Temperature (soldering, 10sec) . . . . . . 260°C

Note

(1): See Recommended Minimum Footprint (Figure 3)

Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings

only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the

specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Electrical Characteristics

(VIN =+3.6V, V SHDN =VIN, TA =TJ =+25°C, unless otherwise noted.) (Note 1)

PARAMETER

SYMBOL

CONDITION

MIN TYP MAX UNIT

Input Voltage (Note 2)

VIN

2.5

---

5.5

Output Voltage Accuracy

VOUT

Variation from specified VOUT, IOUT=1mA

-2

---

Adjustable Output Voltage Range (Note 3)

VOUT

VSET

---

5.5

Maximum Output Current

300

---

Current Limit (Note 4)

ILIM

400

550

---

Short Circuit Current

Isc

---

280

---

Ground Pin Current

---

µA

IOUT =150mA

---

200

---

Dropout Voltage (Note 5)

VDROP

IOUT =300mA

---

400

---

Line Regulation

ΔV

LNR

SET=GND, VIN=V(STD)+0.1V,to 5.5V

IOUT=10mA

---

0.06

---

%/V

Load Regulation

ΔV

LDR

IOUT = 10mA to 300mA

---

0.02

---

%/mA

Ripple Rejection

PSRR

F=100Hz, 0.45VP-P, IOUT=10mA

---

SHUTDOWN

VIH

Regulator enabled

1.5

---

SHDN

Input Threshold

VIL

Regulator shutdown

---

0.4

SHDN

Input Bias Current

I SHDN

V SHDN = VIN

TA = +25°C

---

0.003

0.1

µA

Shutdown Supply Current

IQSHDN

VOUT = 0V

TA = +25°C

---

0.2

µA

SET INPUT

TA = +25°C

1.225 1.25 1.275

SET Reference Voltage (Note 3)

VSET

VIN = 2.5V to 5.5V,

IOUT = 1mA

TA = TMIN to TMAX

---

1.25

---

SET Input Leakage Current (Note 3)

ISET

VSET = 1.3V

TA = +25°C

---

THERMAL PROTECTION

Thermal Shutdown Temperature

TSHDN

---

145

---

°C

Thermal Shutdown Hysteresis

ΔT

SHDN

---

°C

Note 1: Limits is 100% production tested at TA= +25°C. Low duty pulse techniques are used during test to maintain junc-

tion temperature as close to ambient as possible.

Note 2:

Guaranteed by line regulation test.

Note 3:

Adjustable mode only.

Note 4:

Not tested. For design purposes, the current limit should be considered 400mA minimum to 650mA maximum.

Note 5:

The dropout voltage is defined as (VIN-VOUT) when VOUT is 100mV below the target value of VOUT. The performance of

every G923 part, see “Typical Performance Characteristics”.

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