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參數(shù)資料
| 型號(hào)： | TPS60101PWPRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.1 A SWITCHED CAPACITOR REGULATOR, 400 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | GREEN, PLASTIC, HTSSOP-20 |
| 文件頁(yè)數(shù)： | 7/26頁(yè) |
| 文件大小： | 840K |
| 代理商： | TPS60101PWPRG4 |
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TPS60101
REGULATED 3.3V 100mA LOW NOISE
CHARGE PUMP DC/DC CONVERTER
SLVS214A JUNE 1999 REVISED SEPTEMBER 1999
15
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
detailed description (continued)
shutdown
Driving ENABLE low places the device in shutdown mode. This disables all switches, the oscillator, and control
logic. The device typically draws 0.05-
A (1-A max) of supply current in this mode. Leakage current drawn from
the output is as low as 1
A max. The device exits shutdown once ENABLE is set high level. The typical no-load
shutdown exit time is 10
s. When the device is in shutdown, the load is isolated from the input and the output
is high impedance.
external clock signal
If the device operates at a user defined frequency, an external clock signal can be used. Therefore, SYNC needs
to be connected to IN and the external oscillator signal can drive 3V8. The maximum external frequency is
limited to 800 kHz. The switching frequency of the converter is half of the external oscillator frequency. It is
recommended to operate the charge pump in constant-frequency mode if an external clock signal is used so
that the output noise contains only well-defined frequency components.
IN
C1+
C1
ENABLE
OUT
FB
C2+
C2
SYNC
SKIP COM 3V8
PGND GND
INPUT
1.8 V to 3.6 V
CIN
4.7
F
OUTPUT
3.3 V 100 mA
CO = 22 F
C2F
1
F
C1F
1
F
+
OFF/ON
TPS60101
+
External Clock
Figure 32. Typical Operating Circuit TPS60101 With External Synchronization
undervoltage lockout
The TPS60101 has an undervoltage lockout feature that deactivates the device and places it in shutdown mode
when the input voltage falls below 1.6 V.
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