ECLIPTEK 11.250M

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Item Description:







Technical Document


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TK112xx
January, 1996 TOKO, Inc. Page 1
1-3-96
TK112XXM
BLOCK DIAGRAM
VOLTAGE REGULATOR WITH ON/OFF SWITCH
FEATURES
Low Dropout Voltage
CMOS/TTL Compatible ON/OFF Switch
Very Low Standby Current 180 µA (ON, No Load)
Internal Thermal Shutdown
Short Circuit Protection
Very Low (0.1 µA) Current in OFF Mode
Low Noise with External Bypass Capacitor
APPLICATIONS
Battery Powered Systems
Cellular Telephones
Pagers
Personal Communications Equipment
Portable Instrumentation
Portable Consumer Equipment
Radio Control Systems
Toys
Low Voltage Systems
1
3
CONTROL
GND
6
4
V
IN
V
O
TK112 M PO
2 5
GND
BYPASS
DESCRIPTION
The TK112XX is a low power, linear regulator with a built-
in electronic switch. The internal electronic switch can be
controlled by TTL or CMOS logic levels. The device is in
the ON state when the control pin is pulled to a high logic
level. A pin for a bypass capacitor is provided, which
connects to the internal circuitry, to lower the overall output
noise level.
An internal PNP pass-transistor is used in order to achieve
low dropout voltage (typically 100 mV at 30 mA load
current). The device has very low quiescent current (180
µA) in the ON mode with no load and 1 mA with 30 mA load.
The quiescent current is typically 2.5 mA at 60 mA load.
When the device is in standby mode (V
CONT
= 0), the
quiescent current is typically 100 nA. An internal thermal
shutdown circuit limits the junction temperature to below
150 °C. The load current is internally monitored and the
device will shut down in the presence of a short circuit at the
output.
TK112
M
Voltage Code
Tape/Reel Code
TAPE/REEL CODE
BX : Bulk/Bag
TL : Tape Left
ORDERING INFORMATION
VOLTAGE CODE
27 = 2.75 V
30 = 3.0 V
32 = 3.25 V
35 = 3.5 V
40 = 4.0 V
45 = 4.5 V
47 = 4.75 V
50 = 5.0 V
SS
S
S
SS
S
S
S
S
S
V
O
GND
TK112xx
+
BANDGAP
REFERENCE
THERMAL
PROTECTION
+
S
NOISE
BYPASS
S
S
S
S
S
S
V
IN
CONTROL
S S
3
2,5
4
6
1
P50
Page 2
1-3-96
TK112xx
January, 1996 TOKO, Inc.
SYMBOL PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
V
IN
Supply Voltage Range 1.8 15 V
I
IN
Supply Current I
O
= 0 mA, Except I
CONT
170 350 µA
I
INS
Standby Current V
IN
= 8 V, Output off 0.1 µA
V
O
Output Voltage I
O
= 30 mA 2.66 2.75 2.84 V
V
DROP
Dropout Voltage I
O
= 60 mA 0.18 0.3 V
I
O
Output Current Note 3 150 170 mA
I
OR
Recommended Output Current 130 mA
Line Reg Line Regulation V
IN
= 3.25 8.25 V 3.0 20 mV
Load Reg Load Regulation
I
O
= 5 mA 60 mA 30 60 mV
I
O
= 5 mA 100 mA 80 150 mV
RR Ripple Rejection 100 mV(rms), f = 400 Hz, 60 dB
I
O
= 10 mA
V
O
/T
A
Temperature Coefficient I
O
= 10 mA 0.15 mV/ °C
-25 °C T
A
+ 75 °C
V
NO
Output Noise Voltage 10 Hz < f < 100 kHz, 30 µV(rms)
I
O
= 30 mA, Cp = 0.01 µF
V
REF
Noise Bypass Terminal Voltage 1.25 V
Control Terminal Specification
I
CONT
Control Current Output on, V
CONT
= 2.4 V 14 40 µA
V
CONT
Control Voltage
Output on 2.4 V
Output off 0.6 V
t
r
Output Rise Time Off On I
O
= 30 mA, V
CONT
= 0 2.4 V 0.3 ms
Supply Voltage ......................................................... 16 V
Output Current .................................................... 220 mA
Power Dissipation (Note 1) ................................ 400 mW
Storage Temperature Range ................... -55 to +150 °C
Operating Temperature Range ...................-30 to +80 °C
Lead Soldering Temp. (10 sec.)............................ 240 °C
Junction Temperature ........................................... 150 °C
TK11227 ELECTRICAL CHARACTERISTICS
Test conditions: T
A
= 25 °C, V
IN
= 3.8 V, unless otherwise specified.
Note 1: Power dissipation must be derated at rate of 1.6 mW/°C for operation above 25 °C . Maximum power dissipation = 400 mW
(When mounted as recommended), and 200 mW in free air.
Note 2: Output side capacitor should have low ESR at low temperatures if used below 0 °C.
Note 3: I
O
(Output Current) is the measured current when the output voltage drops 0.3 V with respect to V
O
at I
O
= 30 mA.
Note 4: This measurement (pulse measurement) is with a constant T
J
. The output change due to temperature change is not included.
ABSOLUTE MAXIMUM RATINGS
TK112xx
January, 1996 TOKO, Inc. Page 3
1-3-96
SYMBOL PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
V
IN
Supply Voltage Range 1.8 15 V
I
IN
Supply Current I
O
= 0 mA, Except I
CONT
170 350 µA
I
INS
Standby Current V
IN
= 8 V, Output off 0.1 µA
V
O
Output Voltage I
O
= 30 mA 2.90 3.00 3.10 V
V
DROP
Dropout Voltage I
O
= 60 mA 0.18 0.3 V
I
O
Output Current Note 3 150 170 mA
I
OR
Recommended Output Current 130.0 mA
Line Reg Line Regulation V
IN
= 3.5 8.5 V 3.0 20 mV
Load Reg Load Regulation
I
O
= 5 mA 60 mA 30 60 mV
I
O
= 5 mA 100 mA 80 150 mV
RR Ripple Rejection 100 mV(rms), f = 400 Hz, 60.0 dB
I
O
= 10
V
O
/T
A
Temperature Coefficient I
O
= 10 mA 0.15 mV/ °C
-25 °C T
A
+ 75 °C
V
NO
Output Noise Voltage 10 Hz < f < 100 kHz, 30 µV(rms)
I
O
= 30 mA, Cp = 0.01 µF
V
REF
Noise Bypass Terminal Voltage 1.25 V
Control Terminal Specification
I
CONT
Control Current Output on, V
CONT
= 2.4 V 14 40 µA
V
CONT
Control Voltage
Output on 2.4 V
Output off 0.6 V
t
r
Output Rise Time Off On I
O
= 30 mA, V
CONT
= 0 2.4 V 0.3 ms
Note 1: Power dissipation must be derated at rate of 1.6 mW/°C for operation above 25 °C . Maximum power dissipation = 400 mW
(When mounted as recommended), and 200 mW in free air.
Note 2: Output side capacitor should have low ESR at low temperatures if used below 0 °C.
Note 3: I
O
(Output Current) is the measured current when the output voltage drops 0.3 V with respect to V
O
at I
O
= 30 mA.
Note 4: This measurement (pulse measurement) is with a constant T
J
. The output change due to temperature change is not included.
TK11230 ELECTRICAL CHARACTERISTICS
Test conditions: T
A
= 25 °C, V
IN
= 4 V, unless otherwise specified.
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