s-8337aaca-t8t1g Seiko Instruments Inc., s-8337aaca-t8t1g Datasheet - Page 7

• Manufacturer Part Number: s-8337aaca-t8t1g
• Description: Step-up, 1.2 Mhz High-frequency, Pwm Control Switching Regulator Controller
• Manufacturer: Seiko Instruments Inc.

*1. The recommended range of the resistance (R
*2. The short-circuit protection time can be set by the external capacitor, and the maximum set value by the external capacitor is unlimited
CC pin output current
Operating input voltage
FB voltage
Current consumption
Shutdown current
consumption
EXT pin output current
FB voltage temperature
coefficient
FB pin input current
Oscillation frequency
Oscillation frequency
temperature coefficient
Max. duty ratio
Soft-start time
Short-circuit protection
delay time
UVLO detection voltage
UVLO hysteresis width
Timer latch reset
voltage
Shutdown pin input
voltage (High level)
Shutdown pin input
voltage (Low level)
Shutdown pin input
current (High level)
Shutdown pin input
current (Low level)
Rev.3.1
MHz). However, the oscillation frequency is in the range of typical values when an ideal resistor is externally connected, so actually
the fluctuation of the IC (±10%) must be considered.
when an ideal case is assumed. But, use C
discharge time of the capacitor.
2. S-8338 Series
Parameter
*2
_00
STEP-UP, 1.2 MHz HIGH-FREQUENCY, PWM CONTROL SWITCHING REGULATOR CONTROLLER
*1
MaxDuty f
V
Symbol
V
UVLOHYS
V
ΔV
I
I
Δf
ΔTa
ΔTa
t
I
V
I
I
I
V
EXTH
EXTL
V
V
f
t
PRO
UVLO
CCH
I
SSS
I
CCL
RTLT
I
SS1
osc
FB
SS
SH
SL
FB
SH
osc
SL
IN
FB
f
V
V
V
V
Ta = −40°C to +85°C
f
f
f
V
Waveform on EXT pin is measured
Ta = −40°C to +85°C
f
t
Selectable in three steps
t
(CSP = 0.1 μF)
V
Selected in 0.1 V steps
V
Selected in 0.1 V steps
V
V
osc
osc
osc
osc
osc
osc
SS
PRO
FB
IN
EXT
EXT
FB
UVLO
UVLOHYS
FB
FB
= 10 ms, 15 ms, 20 ms
Table 5 Electrical Characteristics
= 700 kHz
= 6.0 V
= 1133 kHz (R
= 700 kHz (R
= 286 kHz (R
= 700 kHz
= 700 kHz (R
= 0.95 V
= 0.9 V
= 2 V
= 0 V
= 50 ms
= V
= 0.4 V
SP
osc
= 1.5 V to 2.3 V
Seiko Instruments Inc.
= approximately 0.47 μF as a target maximum value due to the need to consider the
) for setting the oscillation frequency is R
IN
= 0.1 V to 0.3 V
− 0.4 V
Conditions
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
OSC
OSC
OSC
OSC
= 200 kΩ)
= 510 kΩ)
= 200 kΩ)
= 120 kΩ)
(Unless otherwise specified: V
V
× 0.75
× 0.95
0.985
UVLOHYS
V
× 0.9
× 0.6
Min.
−0.1
37.5
37.5
−0.1
−0.1
100
−75
1.8
0.7
1.8
f
t
UVLO
83
⎯
⎯
⎯
⎯
⎯
⎯
osc
SS
osc
V
= 120 kΩ to 510 kΩ (f
1.000
V
UVLOHYS
−100
±100
1000
Typ.
400
160
−50
f
1.0
88
t
50
UVLO
50
⎯
⎯
⎯
⎯
⎯
⎯
⎯
osc
SS
V
S-8337/8338 Series
× 1.05
1.015
× 1. 5
V
UVLOHYS
−37.5
× 1.1
× 1.4
Max.
+0.1
+0.1
+0.1
700
−60
IN
6.0
1.0
1.3
0.3
f
t
UVLO
93
75
75
⎯
⎯
⎯
⎯
osc
SS
= 3.3 V, Ta = 25°C)
osc
ppm/°C
ppm/°C
= 286 kHz to 1.133
Unit
kHz
mA
mA
mV
ms
ms
μA
μA
μA
μA
μA
μA
μA
%
V
V
V
V
V
V
Circuit
Test
1
1
2
2
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
7