Ver: 1.2

Mar 01, 2005

TEL: 886-3-5788833

http://www.gmt.com.tw

2

G5104

Global Mixed-mode Technology Inc.

Absolute Maximum Ratings

SW to GND………………………….……….-0.3V to +7V

Operating Temperature Range (Note 1) -40°C to +85°C

Junction Temperature ......….......….......….........+125°C

Storage Temperature…………......……-65°C to +150°C

Reflow Temperature (Soldering, 10 sec)…….…+260°C

Stress beyond those listed under “Absolute Maximum Rating” may cause permanent damage to the device.

Electrical Characteristics

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Input Voltage Range

1.7

---

5.5

V

Not Switching

---

40

80

µA

Quiescent Current

---

0.1

1

µA

FB Comparator Trip Point

1.18

1.2

1.22

V

Output Voltage Line Regulation

---

-0.05

---

%/V

FB Pin Bias Current (Note 2)

---

---

1

µA

Switch Off Time

---

450

---

ns

---

120

160

mV

Switch Current Limit

400

500

600

mA

SHDN

Pin Current

---

0.1

1

µA

SHDN

Input Voltage High

0.9

---

---

V

SHDN

Input Voltage Low

---

---

0.25

V

Switch Leakage Current

---

0.01

5

µA

Note 1: The G5104 are guaranteed to meet performance specifications from 0°C to 85°C. Specifications over the

-40°C to 85°C operating temperature range are assured by design, characterization and correlation with

statistical process controls.

Note 2: Bias current flows into the FB pin.

Block Diagram

+

+

VREF

BIAS

SHUTDOWN

LOGIC

C2

SW

L1

SHDN

VCC

C1

R1

R2

V

OUT

FB

ERROR

COMP

1.2V

en_sw

GND

PUMP CONTROL

OC

COMP

DRIVER

CONTROL

C3

(option)

+

+

VREF

BIAS

SHUTDOWN

LOGIC

C2

SW

L1

SHDN

VCC

C1

R1

R2

V

OUT

FB

ERROR

COMP

1.2V

en_sw

GND

PUMP CONTROL

OC

COMP

DRIVER

CONTROL

C3

(option)