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150mA CMOS LDO Regulator (Preliminary)
Description
The CYT6166 series of fixed output low dropout linear regulators are designed for portable battery powered applications, which require low dropout voltage and low ground current. Each device contains a voltage reference unit, an error amplifier, a PMOS power transistor, and resistors for setting output voltage, and current limit and temperature limit protection circuits. The CYT6166 has been designed to be used with low cost capacitors and requires a minimum output capacitor of 1.0F. Standard voltage versions are 1.5, 1.8, 2.5, 2.8, 3.0, and 3.3V.
CYT6166
Features
Typical Low Dropout Voltage of 203mV at 75mA. Guaranteed 150mA output over the full operating temperature range. Excellent Line and Load Regulation. High Accuracy Output Voltage of 2%. Typical Low Ground Current at 1mA Current Limiting and Thermal Protection. Standard SOT-23-3L, TO-92, and SOT-323-3L Package.
Applications
Cellphones. Wireless LAN's. Hand-Held Instrumentation. Portable Video Game Devices. Digital Cameras. Marking Information CYT6166AHN YYWW CYT6166BHN YYWW CYT6166CHN YYWW CYT6166DHN YYWW CYT6166EHN YYWW CYT6166FHN YYWW CYT6166AHG YYWW CYT6166BHG YYWW CYT6166CHG YYWW CYT6166DHG YYWW CYT6166EHG YYWW CYT6166FHG YYWW
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 CYT6166AHN CYT6166BHN CYT6166CHN CYT6166DHN CYT6166EHN CYT6166FHN CYT6166AHG CYT6166BHG CYT6166CHG CYT6166DHG CYT6166EHG CYT6166FHG
YY: year code WW: week code.
Preliminary and all contents are subject to change without prior notice. 1
150mA 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 3.3V 2.8V 2.5V 1.8V 1.5V 3.0V 3.3V 2.8V 2.5V 1.8V 1.5V 3.0V CYT6166ALN CYT6166BLN CYT6166CLN CYT6166DLN CYT6166ELN CYT6166FLN CYT6166ALG CYT6166BLG CYT6166CLG CYT6166DLG CYT6166ELG CYT6166FLG CYT6166APN CYT6166BPN CYT6166CPN CYT6166DPN CYT6166EPN CYT6166FPN CYT6166APG CYT6166BPG CYT6166CPG CYT6166DPG CYT6166EPG CYT6166FPG 166AN_ 166BN_ 166CN_ 166DN_ 166EN_ 166FN_ 166AG_ 166BG_ 166CG_ 166DG_ 166EG_ 166FG_ 166AN_ 166BN_ 166CN_ 166DN_ 166EN_ 166FN_ 166AG_ 166BG_ 166CG_ 166DG_ 166EG_ 166FG_ Marking Information
CYT6166
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
150mA CMOS LDO Regulator (Preliminary)
Absolute Maximum Ratings(1)
Supply Input Voltage (VIN) .................. 0.7V to +6V Power Dissipation (PD) ........... Internally Limited
(3)
CYT6166
Operating Ratings(2)
Supply Input Voltage (VIN) ............ +2.0V to +5.5V Junction Temperature (TJ) ............ 0C to +125C Package Thermal Resistance 160C/W (TO-92) 230C/W (SOT-23-3L) 250C/W (SOT-323-3L)
Junction Temperature (TJ) ........... ...0C to +125C Lead Temperature (soldering, 5 sec.) ........... 260C Storage Temperature (TS) ........... -40C to +150C
Electrical Characteristics
VIN = 5V; CIN = 2.2F; COUT = 2.2F; IOUT = 10mA; TJ = 25C; unless otherwise noted
Symbol
Parameter
Conditions CYT6166 - 1.5V CYT6166 - 1.8V CYT6166 - 2.5V CYT6166 - 2.8V CYT6166 - 3.0V CYT6166 - 3.3V VIN = VOUT + 1V to 5.5V, IOUT = 10mA VIN = 5V; IOUT = 10mA to 150mA Note 4
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 1 1
Max 1.530 1.836 2.550 2.856 3.060 3.366 ---
Unit V V V V V % %
VOUT
Output Voltage Accuracy
VOUT VOUT VOUT/T
Line Regulation Load Regulation (5) Output Voltage Temperature Coefficient
--
0.79
--
mV/C
IOUT = 10mA VIN - VOUT Dropout Voltage
(6)
-------300
20 203 500 150 20 51 1 --
------2 -C dB mA mA mV
IOUT = 75mA IOUT = 150mA Thermal Protection Temperature Protection Hysterisys f = 120 Hz IOUT = 10mA
TPROTECTION PSRR IQ ILIMIT
Thermal Protection Ripple Rejection Quiescent Current Current Limit
Preliminary and all contents are subject to change without prior notice. 3
150mA 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.
CYT6166
Note 3: The maximum allowable power dissipation at any TA (ambient temperature) is calculated using: PD(MAX) = (TJ(MAX) - TA)/JA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. See "Thermal Consideration" 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 0.1mA to 150mA. 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. Changes in output voltage due to heating effects are
Typical Application
Preliminary and all contents are subject to change without prior notice. 4
150mA CMOS LDO Regulator (Preliminary)
Application Hints
external capacitors to ensure stability. ensure performance. The
CYT6166
Thermal Considerations
not exceeded. protection. to ground. The CYT6166 has built-in thermal
Like any low dropout regulator, CYT6166 requires It is important that the thermal limit of the package is external capacitors must be carefully selected to When the thermal limit is exceeded, The power dissipation for a given
the IC will enter protection, and VOUT will be pulled application can be calculated as following: The power dissipation (PD) is PD = IOUT * [VIN - VOUT] The thermal limit of the package is then limited to PD(MAX) = [TJ - TA]/JA where TJ is the junction temperature, TA is the ambient temperature, and JA is around 250C/W for CYT6166. CYT6166 is designed to enter thermal protection at 150C. For example, if TA is 25C then the maximum PD is limited to about 0.5W. In other words, if IOUT(MAX) = 150mA, then [VIN - VOUT] cannot exceed 3.33V.
Input Capacitor
An input capacitor of at least 2.2F is required. Ceramic or Tantalum can be used. The value can be increase without upper limit.
Output Capacitor
An output capacitor is required for stability. It must be placed no more than 1 cm away from the VOUT pin, and connected directly between VOUT and GND pins. The minimum value is 2.2F but may be increase without limit.
Preliminary and all contents are subject to change without prior notice. 5
150mA CMOS LDO Regulator (Preliminary)
OUTLINE DRAWING SOT-23-3L (SC-59)
C J B H
CYT6166
DIM A B C D E F G H J K L
N
DIMENSIONS INCHES MM MIN MAX MIN MAX
0.110 0.047 0.083 0.035 0.070 0.018 0.015 0.0005 0.034 0.003 0.120 0.055 0.104 0.040 0.080 0.024 0.020 0.004 0.040 0.007 0.027 2.80 1.20 2.10 0.89 1.78 0.45 0.37 0.013 0.887 0.085 3.04 1.40 2.64 1.03 2.05 0.60 0.51 0.10 1.02 0.18 0.69
D A E
F
G
K
L
OUTLINE DRAWING TO-92
A
B D
DIM A B E F G H J K
N
DIMENSIONS INCHES MM MIN MAX MIN MAX
0.175 0.170 0.500 0.016 0.045 0.095 0.080 0.125 0.205 0.210 0.610 0.021 0.055 0.105 0.105 0.165 4.445 4.318 12.70 0.407 1.143 2.413 2.032 3.175 5.207 5.334 15.50 0.533 1.397 2.667 2.667 4.191
E
G F H K
J
Preliminary and all contents are subject to change without prior notice. 6
150mA CMOS LDO Regulator (Preliminary)
OUTLINE DRAWING SOT-323-3L
CYT6166
Preliminary and all contents are subject to change without prior notice. 7

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