RT9167A-31CS [ETC]

LOW NOISE FIXED OUTPUT VOLTAGE 200MA/500MA LDO REGULATOR; 低噪声固定输出电压200MA / 500MA LDO稳压器
RT9167A-31CS
型号: RT9167A-31CS
厂家: ETC    ETC
描述:

LOW NOISE FIXED OUTPUT VOLTAGE 200MA/500MA LDO REGULATOR
低噪声固定输出电压200MA / 500MA LDO稳压器

稳压器 输出元件
文件: 总14页 (文件大小:257K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
RT9167/A  
Low-Noise, Fixed Output Voltage,  
200mA/500mA LDO Regulator  
General Description  
Features  
The RT9167/A is a 200mA/500mA low dropout and  
low noise micropower regulator suitable for portable  
applications. The output voltages range from 1.5V to  
5.0V in 100mV increments and 2% accuracy. The  
RT9167/A is designed for use with very low ESR  
capacitors. The output remains stable even with 1µF  
ceramic output capacitor.  
z Stable with Low-ESR Output Capacitor  
z Low Dropout Voltage (220mV and 200mA)  
z Low Operation Current - 80µA Typical  
z Shutdown Function  
z Low Noise Output  
z Low Temperature Coefficient  
z Current and Thermal Limiting  
z Custom Voltage Available  
The RT9167/A uses and internal PMOS as the pass  
device, which does not cause extra GND current in  
heavy load and dropout conditions. The shutdown  
mode of nearly zero operation current makes the IC  
suitable for battery-power devices. Other features  
include a reference bypass pin to improve low noise  
performance, current limiting, and over temperature  
protection.  
z SOT-25 and SOP-8 Packages  
Applications  
z Cellular Telephones  
z Laptop, Notebook, and Palmtop Computers  
z Battery-powered Equipment  
z Hand-held Equipment  
Pin Configurations  
Ordering Information  
Part Number  
Pin Configurations  
RT9167/A-ꢀꢀ ꢀ ꢀꢀ  
Package type  
TOP VIEW  
RT9167/A-ꢀꢀCB  
(Plastic SOT-25)  
5
4
1. IN  
B : SOT-25 Type I  
BR : SOT-25 Type II  
S : SOP-8  
2. GND  
3. SHDN  
4. BP  
1
2
3
5. OUT  
Operating temperature range  
C: Commercial standard  
Output voltage  
15 : 1.5V  
16 : 1.6V  
:
TOP VIEW  
RT9167/A-ꢀꢀCBR  
(Plastic SOT-25)  
5
1
4
3
1. OUT  
2. GND  
3. IN  
4. SHDN  
5. BP  
2
:
TOP VIEW  
49 : 4.9V  
50 : 5.0V  
RT9167/A-ꢀꢀCS  
(Plastic SOP-8)  
GND  
GND  
SHDN 1  
IN 2  
8
7
6
5
500mA Output current  
200mA Output current  
OUT 3  
GND  
GND  
4
BP  
DS9167/A-10 July 2001  
www.richtek-ic.com.tw  
1
RT9167/A  
Marking Information  
Part Number  
RT9167-15CB  
RT9167-16CB  
RT9167-17CB  
RT9167-18CB  
RT9167-19CB  
RT9167-20CB  
RT9167-21CB  
RT9167-22CB  
RT9167-23CB  
RT9167-24CB  
RT9167-25CB  
RT9167-26CB  
RT9167-27CB  
RT9167-28CB  
RT9167-29CB  
RT9167-30CB  
RT9167-31CB  
RT9167-32CB  
RT9167-33CB  
RT9167-34CB  
RT9167-35CB  
RT9167-36CB  
RT9167-37CB  
RT9167-38CB  
RT9167-39CB  
RT9167-40CB  
RT9167-41CB  
RT9167-42CB  
RT9167-43CB  
RT9167-44CB  
RT9167-45CB  
RT9167-46CB  
RT9167-47CB  
RT9167-48CB  
RT9167-49CB  
Marking  
Part Number  
Marking  
AS  
J0  
E0  
E1  
E2  
E3  
E4  
E5  
E6  
E7  
E8  
E9  
EA  
EB  
EC  
ED  
EE  
EF  
EG  
EH  
EJ  
RT9167-50CB  
RT9167A-15CB  
RT9167A-16CB  
RT9167A-17CB  
RT9167A-18CB  
RT9167A-19CB  
RT9167A-20CB  
RT9167A-21CB  
RT9167A-22CB  
RT9167A-23CB  
RT9167A-24CB  
RT9167A-25CB  
RT9167A-26CB  
RT9167A-27CB  
RT9167A-28CB  
RT9167A-29CB  
RT9167A-30CB  
RT9167A-31CB  
RT9167A-32CB  
RT9167A-33CB  
RT9167A-34CB  
RT9167A-35CB  
RT9167A-36CB  
RT9167A-37CB  
RT9167A-38CB  
RT9167A-39CB  
RT9167A-40CB  
RT9167A-41CB  
RT9167A-42CB  
RT9167A-43CB  
RT9167A-44CB  
RT9167A-45CB  
RT9167A-46CB  
RT9167A-47CB  
RT9167A-48CB  
J1  
J2  
J3  
J4  
J5  
J6  
J7  
J8  
J9  
JA  
JB  
JC  
JF  
JE  
JD  
JG  
JH  
JJ  
EK  
EL  
EM  
EN  
EP  
EQ  
ER  
ES  
ET  
EU  
EV  
EW  
EX  
EY  
EZ  
AR  
JK  
JL  
JM  
JN  
JP  
JQ  
JR  
JS  
JT  
JU  
JV  
JW  
JX  
JY  
JZ  
www.richtek-ic.com.tw  
DS9167/A-10 July 2001  
2
RT9167/A  
Part Number  
Marking  
CA  
CB  
I0  
Part Number  
Marking  
CZ  
K0  
RT9167A-49CB  
RT9167A-50CB  
RT9167-15CBR  
RT9167-16CBR  
RT9167-17CBR  
RT9167-18CBR  
RT9167-19CBR  
RT9167-20CBR  
RT9167-21CBR  
RT9167-22CBR  
RT9167-23CBR  
RT9167-24CBR  
RT9167-25CBR  
RT9167-26CBR  
RT9167-27CBR  
RT9167-28CBR  
RT9167-29CBR  
RT9167-30CBR  
RT9167-31CBR  
RT9167-32CBR  
RT9167-33CBR  
RT9167-34CBR  
RT9167-35CBR  
RT9167-36CBR  
RT9167-37CBR  
RT9167-38CBR  
RT9167-39CBR  
RT9167-40CBR  
RT9167-41CBR  
RT9167-42CBR  
RT9167-43CBR  
RT9167-44CBR  
RT9167-45CBR  
RT9167-46CBR  
RT9167-47CBR  
RT9167-48CBR  
RT9167-49CBR  
RT9167-50CBR  
RT9167A-15CBR  
RT9167A-16CBR  
RT9167A-17CBR  
RT9167A-18CBR  
RT9167A-19CBR  
RT9167A-20CBR  
RT9167A-21CBR  
RT9167A-22CBR  
RT9167A-23CBR  
RT9167A-24CBR  
RT9167A-25CBR  
RT9167A-26CBR  
RT9167A-27CBR  
RT9167A-28CBR  
RT9167A-29CBR  
RT9167A-30CBR  
RT9167A-31CBR  
RT9167A-32CBR  
RT9167A-33CBR  
RT9167A-34CBR  
RT9167A-35CBR  
RT9167A-36CBR  
RT9167A-37CBR  
RT9167A-38CBR  
RT9167A-39CBR  
RT9167A-40CBR  
RT9167A-41CBR  
RT9167A-42CBR  
RT9167A-43CBR  
RT9167A-44CBR  
RT9167A-45CBR  
RT9167A-46CBR  
RT9167A-47CBR  
RT9167A-48CBR  
RT9167A-49CBR  
RT9167A-50CBR  
K1  
I1  
K2  
I2  
K3  
I3  
K4  
I4  
K5  
I5  
K6  
I6  
K7  
I7  
K8  
I8  
K9  
I9  
KA  
KB  
KC  
KD  
KE  
KF  
KG  
KH  
KJ  
IA  
IB  
IC  
ID  
IE  
IF  
IG  
IH  
IJ  
KK  
KL  
IK  
IL  
KM  
KN  
KP  
KQ  
KR  
KS  
KT  
KU  
KV  
KW  
KX  
KY  
KZ  
CC  
CD  
IM  
IN  
IP  
IQ  
IR  
IS  
IT  
IU  
IV  
IW  
IX  
IY  
IZ  
CY  
DS9167/A-10 July 2001  
www.richtek-ic.com.tw  
3
RT9167/A  
Pin Description  
Pin Name  
IN  
Pin Function  
Input  
GND  
SHDN  
BP  
Ground  
Active Low Shutdown Input  
Reference Noise Bypass  
Output  
OUT  
Function Block Diagram  
Shutdown  
and  
IN  
SHDN  
Logic Control  
VREF  
BP  
MOS Driver  
_
OUT  
GND  
Error Amp  
Current-Limit  
and  
Thermal  
Protection  
Typical Application Circuit  
RT9167  
V
V
OUT  
IN  
IN  
OUT  
C
IN  
C
OUT  
GND  
1µF  
1µF  
ON  
BP  
SHDN  
C
BP  
OFF  
10nF  
www.richtek-ic.com.tw  
DS9167/A-10 July 2001  
4
RT9167/A  
Absolute Maximum Ratings  
z Input Voltage  
8V  
z Power Dissipation, P @ T = 25°C  
D
A
SOT-25  
SOP-8  
0.25W  
0.625W  
z Operating Junction Temperature Range  
z Storage Temperature Range  
40°C to 125°C  
65°C to 150°C  
z Package Thermal Resistance  
SOT-25, θ  
250°C/W  
160°C/W  
260°C  
JA  
SOP-8, θ  
JA  
z Lead Temperature (Soldering, 5 sec.)  
Electrical Characteristics  
(V = 5.0V, C = 1µF, C  
= 1µF, T = 25°C, unless otherwise specified)  
A
IN  
IN  
OUT  
Parameter  
Symbol  
Test Conditions  
Min Typ Max Units  
2.9  
2.7  
-2  
200  
500  
--  
--  
--  
7
7
Input Voltage Range  
V
%
V
IN  
I = 50mA  
L
Output Voltage Accuracy  
--  
+2  
--  
V  
I = 1mA  
L
OUT  
MAX  
RT9167  
--  
Maximum Output  
Current  
mA  
I
I
RT9167A  
RT9167  
--  
--  
300  
700  
80  
90  
90  
1.1  
55  
--  
Current Limit  
mA  
R
= 1Ω  
LOAD  
LIMIT  
RT9167A  
RT9167/A  
RT9167  
--  
--  
No Load  
--  
150  
150  
150  
5
GND Pin Current  
--  
µA  
I
G
I
I
I
I
I
I
= 200mA  
OUT  
OUT  
OUT  
OUT  
OUT  
OUT  
RT9167A  
RT9167/A  
RT9167/A  
RT9167/A  
RT9167A  
--  
= 500mA  
= 1mA  
--  
(Note)  
Dropout Voltage  
--  
100  
= 50mA  
= 200mA  
= 500mA  
mV  
V
DROP  
(V  
(Nominal)3.0V  
OUT  
--  
220 300  
600 750  
Version)  
--  
Line Regulation  
Load Regulation  
-0.2  
--  
--  
+0.2  
%/V  
V  
V  
V
= (V  
+0.15) to 7V, I = 1mA  
OUT  
LINE  
IN  
OUT  
RT9167  
0.01 0.04  
0.01 0.04  
I
= 0mA to 200mA  
OUT  
OUT  
%/mA  
LOAD  
RT9167A  
--  
I
= 0mA to 500mA  
SHDN Input High Threshold  
SHDN Input Low Threshold  
SHDN Bias Current  
1.6  
--  
--  
--  
--  
0.4  
100  
1
V
V
V
V
V
V
= 3V to 5.5V  
= 3V to 5.5V  
IH  
IN  
IN  
IL  
--  
--  
nA  
µA  
°C  
I
I
SD  
Shutdown Supply Current  
Thermal Shutdown Temperature  
--  
0.01  
155  
V
= 0V  
OUT  
GSD  
--  
--  
T
e
SD  
Output Noise  
--  
350  
58  
--  
C
= 10nF, C = 10µF  
OUT  
nV Hz  
NO  
BP  
Ripple Rejection  
PSRR  
--  
--  
dB  
F = 100Hz, C = 10nF, C  
= 10µF  
OUT  
BP  
Notes: Dropout voltage definition: V - V  
when V  
is 50 mV below the value of V  
at V = V  
+ 0.5V  
IN  
OUT  
OUT  
OUT  
IN  
OUT  
DS9167/A-10 July 2001  
www.richtek-ic.com.tw  
5
RT9167/A  
Typical Operating Charateristics  
Output Voltage vs. Temp.  
GND Current vs. Temp.  
120  
105  
90  
75  
60  
45  
30  
15  
0
3.33  
3.32  
3.31  
3.30  
3.29  
3.28  
3.27  
3.26  
VOUT = 3.3V  
VOUT = 3.3V  
3.25  
-50  
-25  
0
25  
50  
75  
100 125 150  
-50  
-25  
0
25  
50  
75  
100 125 150  
Temperature (  
)
°
C  
Temperature (°C)  
Dropout Voltage vs. Output Current  
Current Limit vs. Temp.  
480  
420  
360  
300  
240  
180  
120  
60  
300  
250  
200  
150  
100  
50  
85°C  
25°C  
-40°C  
RT9167  
VOUT = 3.3V  
VOUT = 3.3V  
0
0
-50  
-25  
0
25  
50  
75  
°
C  
100 125 150  
0
25  
50  
75  
100 125 150 175 200  
Temperature (  
)
Output Current (mA)  
Current Limit vs. Temp.  
PSRR  
70  
60  
50  
40  
30  
20  
10  
0
900  
800  
700  
600  
500  
400  
300  
200  
100  
ILOAD = 1mA, COUT = 4.7µF  
VOUT = 3.3V, CBP = 10nF  
RT9167A  
VOUT = 3.3V  
10  
100  
1K  
Frequency (KHz)  
10K  
100K  
1M  
-50  
-25  
0
25  
50  
75  
°
C  
100 125 150  
)
Temperature (  
www.richtek-ic.com.tw  
DS9167/A-10 July 2001  
6
RT9167/A  
Load Transient Response  
Load Transient Response  
60  
40  
20  
60  
40  
20  
VOUT = 3.0V  
IN = 4V  
VOUT = 3.0V  
VIN = 4V  
COUT = 1µF  
CIN = 10µF  
COUT = 4.7µF  
CIN = 10µF  
V
C
BP = 10nF  
CBP = 10nF  
T
T
T
T
>  
0
>  
0
-20  
-20  
50  
50  
T
T
>  
>  
1
1
-50  
-50  
Time (50µS/Div)  
Time (50µS/Div)  
Line Transient Response  
Line Transient Response  
150  
100  
50  
150  
100  
50  
COUT = 1µF  
CBP = 10nF  
COUT = 1µF  
CBP = 10nF  
VOUT = 3.0V  
VOUT = 3.0V  
Loading = 50mA  
Loading = 1mA  
T
T
T
T
>  
>  
0
0
-50  
-50  
5
4
5
4
T
T
1↓  
1↓  
Time (1mS/Div)  
Time (1mS/Div)  
Line Transient Response  
Line Transient Response  
150  
100  
50  
60  
40  
20  
COUT = 4.7µF  
COUT = 4.7µF  
CBP = 10nF  
CBP = 10nF  
VOUT = 3.0V  
VOUT = 3.0V  
Loading = 1mA  
Loading = 50mA  
T
T
T
T
>  
>  
0
0
-50  
-20  
5
4
5
4
T
T
1↓  
1↓  
Time (500µS/Div)  
Time (500µS/Div)  
DS9167/A-10 July 2001  
www.richtek-ic.com.tw  
7
RT9167/A  
Applications Guides  
Capacitor Selection and Regulator Stability  
Region of Stable C  
ESR vs. Load Current  
OUT  
100  
Like any low-dropout regulator, the external capacitors  
used with the RT9167/A must be carefully selected for  
regulator stability and performance.  
C
= 4.7µF  
OUT  
10  
C
= 1µF  
OUT  
Using a capacitor whose value is > 1µF on the  
RT9167/A input and the amount of capacitance can be  
increased without limit. The input capacitor must be  
located a distance of not more than 0.5" from the input  
pin of the IC and returned to a clean analog ground.  
Any good quality ceramic or tantalum can be used for  
this capacitor. The capacitor with larger value and  
lower ESR (equivalent series resistance) provides  
better PSRR and line-transient response.  
1
0.1  
0.01  
0.001  
0
40  
80  
120  
160  
200  
Load Current (mA)  
Fig. 1  
The output capacitor must meet both requirements for  
minimum amount of capacitance and ESR in all LDOs  
application. The RT9167/A is designed specifically to  
work with low ESR ceramic output capacitor in space-  
Note that some ceramic dielectrics exhibit large  
capacitance and ESR variation with temperature. It  
may be necessary to use 2.2µF or more to ensure  
stability at temperatures below -10°C in this case. Also,  
tantalum capacitors, 2.2µF or more may be needed to  
maintain capacitance and ESR in the stable region for  
strict application environment.  
saving and performance consideration. Using  
a
ceramic capacitor whose value is at least 1uF with  
ESR is > 5mon the RT9167/A output ensures  
stability. The RT9167/A still works well with output  
capacitor of other types due to the wide stable ESR  
range. Fig.1 shows the curves of allowable ESR range  
as a function of load current for various output  
voltages and capacitor values. Output capacitor of  
larger capacitance can reduce noise and improve  
load-transient response, stability, and PSRR. The  
output capacitor should be located not more than  
Tantalum capacitors maybe suffer failure due to surge  
current when it is connected to a low-impedance  
source of power (like a battery or very large capacitor).  
If a tantalum capacitor is used at the input, it must be  
guaranteed to have a surge current rating sufficient for  
the application by the manufacture.  
0.5" from the V  
to a clean analog ground.  
pin of the RT9167/A and returned  
OUT  
Use a 10nF bypass capacitor at BP for low output  
voltage noise. The capacitor, in conjunction with an  
internal 200Kresistor, which connects bypass pin  
and the band-gap reference, creates an 80Hz low-  
pass filter for noise reduction. Increasing the  
capacitance will slightly decrease the output noise,  
but increase the start-up time. The capacitor  
connected to the bypass pin for noise reduction must  
have very low leakage. This capacitor leakage  
current causes the output voltage to decline by a  
proportional amount to the current due to the voltage  
drop on the internal 200Kresistor. Fig. 2 shows the  
power on response.  
www.richtek-ic.com.tw  
DS9167/A-10 July 2001  
8
RT9167/A  
Internal P-Channel Pass Transistor  
C
= 1nF  
BP  
The RT9167/A features a typical 1.1P-channel  
MOSFET pass transistor. It provides several  
advantages over similar designs using PNP pass  
transistors, including longer battery life. The P-channel  
MOSFET requires no base drive, which reduces  
quiescent current considerably. PNP-based regulators  
waste considerable current in dropout when the pass  
transistor saturates. They also use high base-drive  
currents under large loads. The RT9167/A does not  
suffer from these problems and consume only 80µA of  
quiescent current whether in dropout, light-load, or  
heavy-load applications.  
C
= 10nF  
BP  
V
= 3.0V  
OUT  
0
5.0  
Time (ms)  
10.0  
15.0  
Fig. 2  
Input-Output (Dropout) Voltage  
A
regulator’s minimum input-output voltage  
Load-Transient Considerations  
differential (or dropout voltage) determines the  
lowest usable supply voltage. In battery-powered  
systems, this will determine the useful end-of-life  
battery voltage. Because the RT9167/A uses a P-  
channel MOSFET pass transistor, the dropout  
voltage is a function of drain-to-source on-resistance  
The RT9167/A load-transient response graphs (see  
Typical Operating Characteristics) show two  
components of the output response: a DC shift from  
the output impedance due to the load current  
change, and the transient response. The DC shift is  
quite small due to the excellent load regulation of the  
IC. Typical output voltage transient spike for a step  
change in the load current from 0mA to 50mA is tens  
mV, depending on the ESR of the output capacitor.  
Increasing the output capacitor’s value and  
decreasing the ESR attenuates the overshoot.  
[R  
] multiplied by the load current.  
DS(ON)  
Reverse Current Path  
The power transistor used in the RT9167/A has an  
inherent diode connected between the regulator  
input and output (see Fig.3). If the output is forced  
above the input by more than a diode-drop, this  
diode will become forward biased and current will  
Shutdown Input Operation  
The RT9167/A is shutdown by pulling the SHDN  
input low, and turned on by driving the input high. If  
this feature is not to be used, the SHDN input should  
be tied to VIN to keep the regulator on at all times  
(the SHDN input must not be left floating).  
flow from the V  
terminal to V . This diode will  
OUT  
IN  
also be turned on by abruptly stepping the input  
voltage to a value below the output voltage. To  
prevent regulator mis-operation, a Schottky diode  
should be used in any applications where  
input/output voltage conditions can cause the  
internal diode to be turned on (see Fig.4). As shown,  
the Schottky diode is connected in parallel with the  
internal parasitic diode and prevents it from being  
turned on by limiting the voltage drop across it to  
about 0.3V. < 100 mA to prevent damage to the part.  
To ensure proper operation, the signal source used to  
drive the SHDN input must be able to swing above and  
below the specified turn-on/turn-off voltage thresholds  
which guarantee an ON or OFF state (see Electrical  
Characteristics). The ON/OFF signal may come from  
either CMOS output, or an open-collector output with  
pull-up resistor to the RT9167/A input voltage or  
another logic supply. The high-level voltage may  
exceed the RT9167/A input voltage, but must remain  
within the absolute maximum ratings for the SHDN pin.  
DS9167/A-10 July 2001  
www.richtek-ic.com.tw  
9
RT9167/A  
Current Limit and Thermal Protection  
The RT9167 includes a current limit which monitors  
and controls the pass transistor’s gate voltage limiting  
the output current to 300mA Typ. (700mA Typ. for  
RT9167A). Thermal-overload protection limits total  
power dissipation in the RT9167/A. When the junction  
V
V
IN  
OUT  
Fig. 3  
temperature exceeds T = +155°C, the thermal sensor  
J
signals the shutdown logic turning off the pass  
transistor and allowing the IC to cool. The thermal  
sensor will turn the pass transistor on again after the  
IC’s junction temperature cools by 10°C, resulting in a  
pulsed output during continuous thermal-overload  
conditions. Thermal-overloaded protection is designed  
to protect the RT9167/A in the event of fault conditions.  
Do not exceed the absolute maximum junction-  
V
V
IN  
OUT  
temperature rating of T = +150°C for continuous  
J
Fig. 4  
operation. The output can be shorted to ground for an  
indefinite amount of time without damaging the part by  
cooperation of current limit and thermal protection.  
Operating Region and Power Dissipation  
The maximum power dissipation of RT9167/A  
depends on the thermal resistance of the case and  
circuit board, the temperature difference between the  
die junction and ambient air, and the rate of airflow.  
The power dissipation across the device is P = I  
OUT  
(V - V  
). The maximum power dissipation is:  
IN  
OUT  
PMAX = (T - T ) /θ  
J
A
JA  
where T - T is the temperature difference between  
J
A
the RT9167/A die junction and the surrounding  
environment, θ is the thermal resistance from the  
JA  
junction to the surrounding environment. The GND pin  
of the RT9167/A performs the dual function of  
providing an electrical connection to ground and  
channeling heat away. Connect the GND pin to ground  
using  
a
large  
pad  
or  
ground  
plane.  
www.richtek-ic.com.tw  
DS9167/A-10 July 2001  
10  
RT9167/A  
Package Information  
D
b
C
B
H
A
L
e
A1  
Dimensions In Millimeters  
Dimensions In Inches  
Symbol  
Min  
Max  
Min  
Max  
A
A1  
B
0.889  
0.000  
1.397  
0.356  
2.591  
2.692  
0.838  
0.102  
0.356  
1.295  
0.152  
1.803  
0.559  
2.997  
3.099  
1.041  
0.254  
0.610  
0.035  
0.000  
0.055  
0.014  
0.102  
0.106  
0.033  
0.004  
0.014  
0.051  
0.006  
0.071  
0.022  
0.118  
0.122  
0.041  
0.010  
0.024  
b
C
D
e
H
L
SOT- 25 Surface Mount Package  
DS9167/A-10 July 2001  
www.richtek-ic.com.tw  
11  
RT9167/A  
H
A
M
B
J
F
C
I
D
Dimensions In Millimeters  
Dimensions In Inches  
Symbol  
Min  
Max  
Min  
Max  
A
B
C
D
F
H
I
4.801  
3.810  
1.346  
0.330  
1.194  
0.178  
0.102  
5.791  
0.406  
5.004  
3.988  
1.753  
0.508  
1.346  
0.254  
0.254  
6.198  
1.270  
0.189  
0.150  
0.053  
0.013  
0.047  
0.007  
0.004  
0.228  
0.016  
0.197  
0.157  
0.069  
0.020  
0.053  
0.010  
0.010  
0.244  
0.050  
J
M
8–Lead SOP Plastic Package  
www.richtek-ic.com.tw  
DS9167/A-10 July 2001  
12  
RT9167/A  
DS9167/A-10 July 2001  
www.richtek-ic.com.tw  
13  
RT9167/A  
RICHTEK TECHNOLOGY CORP.  
Headquarter  
RICHTEK TECHNOLOGY CORP.  
Taipei Office (Marketing)  
6F, No. 35, Hsintai Road, Chupei City  
8F-1, No. 137, Lane 235, Paochiao Road, Hsintien City  
Hsinchu, Taiwan, R.O.C.  
Taipei County, Taiwan, R.O.C.  
Tel: (8863)5510047 Fax: (8863)5537749  
Tel: (8862)89191466 Fax: (8862)89191465  
Email: marketing@richtek-ic.com.tw  
www.richtek-ic.com.tw  
DS9167/A-10 July 2001  
14  

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