Global Mixed-mode Technology Inc.
Absolute Maximum Ratings
SW to GND………………………….……….-0.3V to +7V
FB to GND…………… ……………………....-0.3V to V
CC
VCC,
SHDN
to
GND...........................….....-0.3V to +7V
Operating Temperature Range (Note 1) -40°C to +85°C
G5104
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
(V
CC
= 3.6V,
V
SHDN
= 3.6V, T
A
=
25°C)
PARAMETER
Input Voltage Range
Quiescent Current
FB Comparator Trip Point
Output Voltage Line Regulation
FB Pin Bias Current (Note 2)
Switch Off Time
Switch V
DS(ON)
Switch Current Limit
SHDN
Pin Current
CONDITIONS
Not Switching
V
SHDN
= 0V
2.5V<V
IN
<5.5V
V
FB
= 1.2V
I
SW
= 0.4A
MIN
1.7
---
---
1.18
---
---
---
---
400
---
0.9
---
TYP
---
40
0.1
1.2
-0.05
---
450
120
500
0.1
---
---
0.01
MAX
5.5
80
1
1.22
---
1
---
160
600
1
---
0.25
5
UNITS
V
µA
µA
V
%/V
µA
ns
mV
mA
µA
V
V
µA
SHDN
Input Voltage High
SHDN
Input Voltage Low
Switch Leakage Current
Switch Off, V
SW
= 7V
---
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
L1
V
IN
C1
VCC
SHDN
SW
C2
V
OUT
V
OUT
BIAS
SHUTDOWN
LOGIC
C3
(option)
R1
+
ERROR
COMP
en_sw
PUMP CONTROL
OC
DRIVER
COMP
FB
R2
+
T
OFF
PULSE
CONTROL
1.2V
VREF
GND
Ver: 1.2
Mar 01, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
2
GMT [ GLOBAL MIXED-MODE TECHNOLOGY INC ]
