TK65025 データシートの表示（PDF） - Toko America Inc
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TK65025 Datasheet PDF : 12 Pages
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TK65025
ABSOLUTE MAXIMUM RATINGS
All pins except GND ................................................... 6 V
Power Dissipation (Note1) ................................. 400 mW
Storage Temperature Range ................... -55 to +150 °C
Operating Temp. Range ............................-20 to + 80 °C
Junction Temperature ........................................... 150 °C
ELECTRICAL CHARACTERISTICS
Over operating temperature range and supply voltage range, unless otherwise specified.
SYMBOL
PARAMETER
TEST CONDITION
MIN TYP MAX UNIT
VIN
Supply Voltage Range (Note 2, 5)
0.90
IB(Q)
No Load Battery Current (Note 5) VI = 1.3 V, IO = 0 mA, TA = 25 °C
I (VIN)
Quiescent current into VIN pin
VIN = 1.3 V IO = 1mA, TA = 25 °C
I (VOUT)
Quiescent current into VOUT pin VOUT = VOUT (REG) +20 mV, TA = 25 °C
ƒ(OSC)
Internal oscillator frequency
TA = 25 °C
70
∆ƒ(OSC)/∆T Temperature stability of oscillator VIN = 1.3 V , IO = 1mA
VOUT(REG) Regulation threshold of VOUT
TA = 25 °C
2.85
∆VOUT/∆T Temperature stability of VOUT(REG) VIN = 1.3 V, IO = 1mA
∆VOUT(LOAD) Load regulation of VOUT(REG) (Note 2) VIN = 1.3 V, IO = 0→4 mA
∆VOUT(LINE) Line regulation of VOUT(REG)
∆VIN = 0.25 V, IO = 1mA
-20
VOUT(RST) VOUT during reset transition
VIN = 1.3 V, TA = 25 °C
2.48
VRST(HI)
Logic High of RESET w/r/t VOUT VO ≥ 2.6 V
-100
VRST(LO)
Logic Low of RESET
VO ≤ 2.5 V
∆VOUT(RST) VOUT(RST) threshold hysteresis TA = 25 °C
RSW(ON)
On-resistance of switch, IND pin VOUT = VOUT(REG), TA = 25 °C
D(OSC)
On-time duty ratio of oscillator
36
η
Converter efficiency (Notes 4,5) VI = 1.3 V, IO = 4 mA
VUVL
Undervoltage lockout threshold TA = 25 °C IO = 1mA
IO(MAX)
Maximum IO for converter (Notes 3,5) VI ≥ 1.1 V, VO Regulated
4
1.60 V
80 120 µA
20 35 µA
22 34 µA
83 102 kHz
800
ppm/°C
3.00 3.10 V
250
ppm/°C
0
mV
0 20 mV
2.70 V
mV
100 mV
45
mV
1
ohm
50 64 %
74
%
0.74
V
mA
TEST CIRCUIT
RESET
IB
VI
RN
1K C N
10 µF
L = 95 µH
VIN
1
GND
2
IND
3
CS
220 pF
D
RS
RESET
6
GND
5
VOUT
4
CU
10 µF
RR
300 kΩ
ROF
15
IO
VO
10CDµF
1K
Inductor L: Toko 682AE-014 or equivalent
Diode D: LL103A or equivalent
Capcitors CN: CU; CD: Panasonic TE series, ECS-T0JY106R
Page 2
Note 1: Derate at 0.8 mW/oC for operation above TA = 25 oC ambient tempera-
ture, when heat conducting copper foil path is maximized on the printed circuit
board. When this is not possible, a derating factor of 1.6 mW/ °C must be used.
Note 2: Specifications are tested to 1.6 V. Device is suitable for dual cell
operation.
Note 3: Maximum load current depends on inductor value. With a 0.9 V or 1.0
V supply voltage, 4 mA can be obtained with a smaller inductor value.
Note 4: Output ripple depends on filter capacitor values, ESRs and the
connection of (VOUT) sense point.
Note 5: When using specified TOKO inductor and Schottky diode with VF=0.45
V @ 100 mA. By trading component size for better specifications, using
Schottky diode with lower forward voltage, efficiency greater than 80% can be
attained.
February, 1997 Toko, Inc.
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