400mA CMOS LDO
Regulator
(Preliminary)
Description
The
CYT6167
is an efficient linear voltage
regulator. It has extra low dropout voltage. At light
loads the typical dropout voltage is 15mV, at full
load the typical dropout voltage is 600mV. The
output voltage accuracy is better than 2%.
The
CYT6167
has low ground current at 65uA,
so it can help prolong battery life. The
CYT6167
is
specially designed for hand-held, battery-powered
devices.
CYT6167
Features
Typical 175mV dropout voltage at 150mA.
Low Ground current at 65uA. (Typ.)
Guaranteed 400mA output over the full
operating temperature range.
Extremely tight load and line regulation.
Low temperature coefficient.
Current and thermal limiting.
No-load stability.
Available in SOT-23-3L and TO-92 Packages.
Applications
CD/DVD-ROM, CD/RW
Wireless LAN card, Keyboard, Mouse
Battery Powered Equipments
PCMCIA Card
Ordering/Marking Information
Package
Ordering Information
3.3V
2.8V
2.5V
1.8V
1.5V
3.0V
3.3V
2.8V
2.5V
1.8V
1.5V
3.0V
CYT6167AHN
CYT6167BHN
CYT6167CHN
CYT6167DHN
CYT6167EHN
CYT6167FHN
CYT6167AHG
CYT6167BHG
CYT6167CHG
CYT6167DHG
CYT6167EHG
CYT6167FHG
Marking Information
CYT6167AHN
YYWW
CYT6167BHN
YYWW
CYT6167CHN
YYWW
CYT6167DHN
YYWW
CYT6167EHN
YYWW
CYT6167FHN
YYWW
CYT6167AHG
YYWW
CYT6167BHG
YYWW
CYT6167CHG
YYWW
CYT6167DHG
YYWW
CYT6167EHG
YYWW
CYT6167FHG
YYWW
YY: year code
WW: week code.
Preliminary and all contents are subject to change without prior notice.
1
400mA CMOS LDO
Regulator
(Preliminary)
Ordering/Marking Information (Continued)
Package
Ordering Information
3.3V
2.8V
2.5V
1.8V
1.5V
3.0V
3.3V
2.8V
2.5V
1.8V
1.5V
3.0V
CYT6167ALN
CYT6167BLN
CYT6167CLN
CYT6167DLN
CYT6167ELN
CYT6167FLN
CYT6167ALG
CYT6167BLG
CYT6167CLG
CYT6167DLG
CYT167ELG
CYT6167FLG
167AN_
167BN_
167CN_
16 7DN_
167EN_
16 7FN_
16 7AG_
16 7BG_
16 7CG_
16 7DG_
16 7EG_
16 7FG_
Marking Information
CYT6167
Starting with 1, a bar on top of 1 is
for production year 2001, and
underlined 1 is for year 2002.
The
next character is marked on top for
2003, and underlined for 2004. The
naming pattern continues with
consecutive characters for later
years.
The last character is the week
code. (
A-Z:
1-26, a-z: 27-52)
Preliminary and all contents are subject to change without prior notice.
2
400mA CMOS LDO
Regulator
(Preliminary)
Absolute Maximum Ratings
(1)
Supply Input Voltage (VIN) ..……...…… -0.7V to +6V
Power Dissipation (PD) ……….. Internally Limited
(3)
CYT6167
Operating Ratings
(2)
Supply Input Voltage (VIN) ……...….. +2.8V to +6V
Junction Temperature (TJ) …….….. 0°C to +125°C
Package Thermal Resistance
160°C/W (TO-92)
250°C/W (SOT-23-3L)
Junction Temperature (TJ) …….….... 0°C to +125°C
Lead Temperature (soldering, 5 sec.) …....…. 260°C
Storage Temperature (TS) ……….. -40°C to +150°C
Electrical Characteristics
V
IN
= V
OUT
+ 1.0V; C
IN
= 2.2µF; C
OUT
= 2.2µF; I
OUT
= 10mA; T
J
= 25°C, unless otherwise specified.
Symbol
Parameter
Conditions
CYT6167-1.5V
CYT6167-1.8V
V
OUT
Output Voltage
Accuracy
CYT6167-2.5V
CYT6167-2.8V
CYT6167-3.0V
CYT6167-3.3V
∆V
OUT
/∆T
Output Voltage
Temperature Coefficient
Line Regulation
Note 4
V
IN
= 4.3V to 6V, I
OUT
= 10mA
(V
OUT
= 3.3V)
V
IN
= 5V, I
OUT
=10mA to 400mA
(V
OUT
= 3.3V)
I
OUT
=10mA
V
IN
- V
OUT
Dropout Voltage
(6)
I
OUT
=150mA
I
OUT
=300mA
I
OUT
=400mA
T
PROTECTION
PSRR
I
GROUND
I
LIMIT
Thermal Protection
Ripple Rejection
Ground Current
Current Limit
Thermal Protection Temperature
Protection Hysterisys
f =120Hz
I
OUT
=10mA
V
OUT
=0V
Min
1.470
1.764
2.450
2.744
2.940
3.234
--
Typ
1.5
1.8
2.5
2.8
3.0
3.3
0.025
Max
1.530
1.836
2.550
2.856
3.060
3.366
--
mV/
℃
V
Units
∆V
OUT
/ V
OUT
--
1.0
--
%/V
∆V
OUT
/ V
OUT
Load Regulation
(5
--
--
--
--
--
--
--
--
--
--
1.0
15
175
380
600
150
20
59
65
600
--
--
--
--
--
--
--
--
--
--
%
mV
℃
℃
dB
uA
mA
Preliminary and all contents are subject to change without prior notice.
3
400mA CMOS LDO
Regulator
(Preliminary)
Note 1:
Exceeding the absolute maximum rating may damage the device.
Note 2:
The device is not guaranteed to function outside its operating rating.
CYT6167
Note 3:
The maximum allowable power dissipation at any TA (ambient temperature) is calculated using: P
D(MAX)
= (T
J(MAX)
- T
A
)/θ
JA
. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the
regulator will go into thermal shutdown. See Table 1 and the “Thermal Considerations” section for details.
Note 4:
Output voltage temperature coefficient is the worst-case voltage change divided by the total temperature range.
Note 5:
Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for
load regulation in the load range from 100µA to 400mA. Changes in output voltage due to heating effects are
covered by the thermal regulation specification.
Note 6:
Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its
nominal value measured at 1V differential.
Typical Application
Preliminary and all contents are subject to change without prior notice.
4
400mA CMOS LDO
Regulator
(Preliminary)
Line Regulation (VOUT = 3.3V)
(VIN = 4.3V to 6V, IOUT = 10mA)
CYT6167
(VIN = 5V, IOUT = 10mA to 500mA)
Load Regulation (VOUT = 3.3V)
3.6000
3.600
3.500
3.400
VOUT (V)
3.5000
3.4000
VOUT (V)
3.3000
3.300
3.200
3.100
3.000
3.2000
3.1000
3.0000
4.2
4.7
5.2
VIN (V)
5.7
0
100
200
IOUT (mA)
300
400
500
Output Voltage vs Temperature
(VIN = 5V, IOUT = 10mA)
IQ vs IOUT (VOUT = 3.3V)
(VIN = 5V, IOUT = 10mA to 500mA)
3.330
3.320
3.310
VOUT (V)
160
140
120
100
IQ (uA)
80
60
40
3.300
3.290
3.280
3.270
0
20
40
60
Temperature (C)
20
0
80
100
120
0
100
200
300
IOUT (mA)
400
500
PSRR (VOUT = 3.3)
(VIN = 5V, VPP = 1V)
Transient Response (VOUT = 3.3V)
(IOUT = 10mA to 40mA)
70
60
50
PSRR (dB)
40
30
20
10
0
100
1000
10000
Frequency (Hz)
Preliminary and all contents are subject to change without prior notice.
5
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